Your new item is valuable and could be lost, stolen or damaged. Would you like to be able to come back to us for repair and replacement as close as possible to the original item.
If so, then Assetsure Valuable item insurance may be for you.
What's covered
  • Accidental Loss.
  • Accidental Damage.
  • Theft including Mugging.
  • Accidental Loss.
  • No Excess to pay if you have a claim.
Main Exclusions
  • Loss or damage occurring outside of the United Kingdom if you have been, or intend to be, away from the United Kingdom for more than 60 consecutive days.
  • Scratching, denting or cosmetic only damage.
  • Any loss or damage to Jewellery and Watches away from either your home or another private dwelling in the UK where you are staying temporarily, unless the item is: a) worn by you, or b) carried under your close personal control, or c) Kept in a locked safe, or d) Kept in a locked gym locker whilst you remain on the gym premises.
To be eligible for the Assetsure policy you must be able to confirm the following:
  • You are over 21 Years of Age.
  • You are normally resident in the United Kingdom.
  • You or the wearer of any item have no unspent Criminal Convictions.
For full terms and conditions please click here.
Important Note
You need to satisfy that this product is suitable for you and ensure that you do not already have insurance covering similar risks.
Important Note Demands & Needs
We do not specifically recommend products; You need to satisfy that this product is suitable for you and ensure that you do not already have insurance covering similar risks. This product meets the demands and needs of those who wish to ensure that their Jewellery is protected against a wide range of perils, such as accidental damage, theft and accidental loss.
Your premium includes insurance premium tax at the current rate
This insurance policy is arranged and sold by Assetsure which is a trading name of Hildon Park Limited. Hildon Park Limited are authorised and regulated by the Financial Conduct Authority under reference number 592997 to carry out the distribution of insurance products.
FREE WORLDWIDE DELIVERY 30 DAY RETURNS / 60 DAY EXCHANGE 5 YEAR WARRANTY 0% APR FINANCE UK HANDCRAFTED
FREE WORLDWIDE DELIVERY 30 DAY RETURNS / 60 DAY EXCHANGE 5 YEAR WARRANTY 0% APR FINANCE UK HANDCRAFTED
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WHAT ARE YOU LOOKING FOR?

37% PRICE DROP
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1
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New

Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1

37% PRICE DROP £3,299 RRP£6,065

Finance available from £111.0/month -

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Item Ref: NDUT71-722IXU3S.F.0

Butterfly Mark
Free Delivery By         /06/2025
SIZE GUIDE
DIAMOND CHOICES
IGI Certificate

IGI Certificates

IGI (International Gemological Institute) is an extremely well respected and world-renowned laboratory which specialises in grading diamonds and precious gemstones. 

An IGI certificate is a real 'seal of quality'. This certificate will assure you that the diamond you have chosen is nothing less than it should be. 

The value of a diamond is determined through an intricate process during which its gemmological makeup, rarity and quality are examined. This is the only real way of separating one diamond from another. Experts at gemmological laboratories, such as the IGI, use powerful analytical tools and have years of experience in grading diamonds. 

IGI Certificate Example
What does this mean?

The diamond you are buying has been through a rigorous testing process and the independent report/certificate you receive with your jewellery confirms its true qualities.

These certificates can also be validated on the IGI website. By entering your diamond certificate number on the IGI website, you will be shown a verified copy of the report that you have.

Does this make an IGI certified diamond more valuable?

Yes, a diamond with an IGI certificate is much more valuable and sought after than one without.

The IGI report, together with the online validation process, gives you peace of mind when you purchase your diamond. For any prospective buyers or new owners, it’s confirmation of the diamond’s authenticity and quality.

Is This Diamond Conflict Free?

Yes. All the diamonds we sell, including our IGI certified range, are conflict free.

Are IGI certified diamonds any different to other diamonds?

Yes, an IGI certified diamond is exactly what it says it is. Non-certified diamonds are not independently examined. Therefore, you must rely on the retailer’s opinion.

Why are IGI certified diamonds more expensive than SKD certified diamonds?

Because the IGI laboratory is an international, globally recognised laboratory. SKD is a London-based laboratory.

Free Worldwide Delivery

Free Worldwide Delivery

We offer FREE worldwide delivery by DPD or DHL on all our products. See below for specific delivery information.

UK Delivery
United Kingdom

Worldwide Delivery
EU & International

FREE UNITED KINGDOM DELIVERIES

We offer FREE delivery by DPD on all UK & Northern Ireland orders

UK Next Day Delivery

Certain products are eligible for Next Day Delivery via DPD (UK & Northern Ireland only) if ordered before 12pm UK time, Monday to Thursday (excluding bank holidays). Friday, Saturday & Sunday orders will be shipped the following Monday. UK Same Day Delivery – London Postcodes Only We now offer same day delivery on select items for £35 when you order by 2pm, Monday to Thursday or by 11:30am on Friday. Our courier delivers to all London based postcodes.
Qualifying postcodes: SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, W1, W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12, W13, W14, EC1, EC2, EC3, EC4, SE1, SE2, SE3, SE4, SE5, SE6, SE7, SE8, SE8, SE9, SE10. SE11, SE12, SE13, SE14, SE15, SE16, SE17, SE18, SE19, SE20, SE21, SE22, SE23, SE24, SE25, SE26, SE27, SE28, NW1, NW2, NW3, NW4, NW5, NW6, NW7, NW8, NW9, NW10, NW11, N1, N2, N3, N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14, N15, N16, N17, N18, N19, N20, N21, N22, E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, WC1 and WC2.

UK delivery times:

We aim to dispatch all jewellery within 24 hours of receiving your order. However, due to the volume of product we offer, it is not always possible to have every item in stock. This means that we may need to handcraft a ring just for you, or adjust the size of an item before we send it out. If we’re unable to dispatch your order immediately we’ll give you an estimated dispatch date. In any case, we will always email you with a dispatch date within 8 hours* of receiving your order. (*This response time applies during our office opening hours: Monday to Friday, 9am – 5pm. If you place your order outside of these times, we will contact you the next working day.)

Our UK delivery method

For all UK orders we use DPD. This is a secure, insured and speedy delivery method. On dispatch, we’ll email you with information on how to track your order. Your jewellery is insured during transit. It will require a signature when delivered to the address you gave us.

FREE INTERNATIONAL DELIVERIES

We offer FREE Worldwide delivery on all orders

International (non UK) Orders & Taxes We aim to dispatch all jewellery within 24 hours of receiving your order. We have partnered with Globale for all Non-UK Orders and offer:

  • Checkout in your local language and currency for a seamless experience.
  • Real-time calculation of duties and taxes at checkout.
  • Transparent international shipping with DHL
  • An expanded range of global payment methods.
  • Dedicated customer support for international orders.
  • A FREE simplified returns process.

If we’re unable to dispatch your order immediately we’ll give you an estimated dispatch date. Typically, our dispatch times (depending on the piece you ordered) are either 3 days, 5 days or 7-10 days.

Delivery times to Europe & rest of the world

Below you’ll find the estimated DHL transit times to different parts of the world (please note that DHL delivery times apply to working days, excluding weekends and bank holidays)

Ireland
1 day
Europe
1-4 days
USA
1-2 days
Australia, Asia, Africa & South America
2-3 days

 

*Please note that we cannot currently deliver to Brazil, Kuwait, Malaysia, India, Indonesia, Mexico, Switzerland and Portugal. For more information about EU countries please read here.

EU & International delivery methods

For all International orders, we use DHL. This is a secure, insured and speedy delivery method. On dispatch we’ll email you with information on how to track your order. Your jewellery is insured during transit. It will require a signature when delivered to the address you gave us.

International Import duties and taxes

All taxes and duties are shown (if applicable) at checkout. For the European Union and many other countries, all taxes and import duties are taken care of by us.

COUNTRIES WE CANNOT SEND TO

Portugal- PT
Switzerland – CH
Malaysia – MY
India – IN
Indonesia – ID
Mexico – MX
Kuwait – KW
Brazil – BR

If you have a specific deadline: We always work hard to meet any special delivery requirements you may have. Should our estimated delivery time not suit you, please contact us and we will try our hardest to meet your requirements. If we cannot deliver by your special deadline, we will always let you know.


CONTACT US

You can email us on customerservice@thediamondstore.com. Please remember to include your order number You can also check the status of your order here – simply log in with the email address and the password you created when you first placed an order with us.

30 Days Returns / 60 Days Exchange

Our Returns Policy

We want you to feel completely confident when you shop with us. That’s why we offer FREE 30-day returns for refunds and 60-day exchanges across the UK and Northern Ireland.

If you’ve ordered a ring smaller than a size J or larger than a size Q, don’t worry — these are custom sizes, but we’re still happy to offer a free exchange or resizing if the fit isn’t quite right.

Cancelling an Order Before Dispatch

Changed your mind? No problem — you can cancel your order anytime before it’s been dispatched.

Just reach out to our friendly team via Live Chat, by email at customerservice@thediamondstore.com, or give us a call on 0345 084 1200 (or +44 345 084 1200 if calling from outside the UK). Please have your order number handy to help us assist you as quickly as possible.

Product Measurements

Please note that for rings smaller than size J or larger than size Q, the width may vary slightly (up to 10%) due to the crafting process. If you need any adjustments, we’re happy to help.

Damaged or Defective Items

If your item arrives damaged or defective, we’ll make it right — fast. We’ll either repair or replace it at no cost to you, or provide a refund once it’s been assessed by our head jeweller.

Our standard returns policy is 30 days to return, and 60 days to exchange.

5-Year Warranty

We stand by the quality and craftsmanship of our jewellery. That’s why every piece comes with a 5-year warranty covering manufacturing defects in materials or workmanship. In addition, all our jewellery is fully hallmarked in accordance with UK legislation, certifying its authenticity and origin.

Please note, this warranty does not cover damage resulting from general wear and tear, accidental damage, loss, theft, or improper use. For added protection, we recommend taking out specialist jewellery insurance.

How Refunds Work

Once we’ve received and inspected your returned jewellery, we’ll process your refund right away and email you to confirm. Depending on your bank or payment provider, it may take 3 to 5 working days to show up on your statement.

We’ll always refund you via the same method you used to make your purchase — whether that was credit or debit card, PayPal, Pay4Later Finance, bank transfer, or another option.

To avoid delays, make sure to include the returns label print-out with your parcel. This helps us identify your return quickly.

Ethically Sourced Diamonds

We’re proud to say that all our diamonds are conflict-free and fully compliant with United Nations regulations. When you buy from us, you’re choosing ethical beauty.

Need Help? Get in Touch

We’re here whenever you need us.

📧 Email us: customerservice@thediamondstore.com or returns@thediamondstore.co.uk
📞 Call us: 0345 084 1200 (UK) or +44 345 084 1200 (International)

5 Year Warranty

5-Year Warranty

At The Diamond Store, we take great pride in the quality of our jewellery. Every piece is skilfully crafted to last for many years to come. That’s why we offer a 5-year warranty against manufacturing defects in materials or craftsmanship.

What The Warranty Covers:

If a manufacturing fault is found in the way your jewellery was made, we will repair, remake, or replace it at no cost to you, within the first 5 years after purchase.

What’s Not Covered:

Our warranty does not cover accidental damage, wear and tear, loss, theft, or any work carried out by another jeweller. For example, damage from catching a ring on a door handle, losing an earring in a waste disposal unit, or vacuuming up a bracelet would not be covered. If a piece has been altered or resized elsewhere, the warranty becomes void.

Returns & Peace of Mind

We also offer a 30-day money-back guarantee (excludes custom-made items). Click here to view our full Return & Refund Policies.

Conflict-Free & Fully Certified

All our natural mined diamonds are conflict-free, and every piece of gold, silver, and platinum jewellery is hallmarked in the UK to verify its purity and authenticity.

If Something Goes Wrong

Whatever the issue - whether it's our fault or yours - we encourage you to send the item to us for assessment. If it’s a manufacturing issue, we’ll repair it free of charge. If the damage was accidental, we’ll quote a fair repair cost with no obligation. Either way, we’re here to help.

Need Extra Protection?

For accidental loss or damage, we recommend taking out jewellery insurance with worldwide cover. We partner with the experts at Assetsure. Find out more about jewellery insurance.

&
Insurance Options

Jewellery insurance

Our recommended partners, the jewellery insurance experts Assetsure, offer full worldwide protection including accidental damage or loss.

Find out more about jewellery insurance.

Luxurious Packaging

Is the jewellery sent in plain packaging?

To keep your surprise safe, the outer packaging that we deliver your jewellery in is plain.

On the outside, our plain postal package does not say The Diamond Store anywhere, nor state what the contents are.

So if you’re buying a gift for someone who lives in the same address as you, your secret will remain safe – as long as they don’t open the package!

On the inside, however, you’ll find your beautiful jewellery, along with our stylish gift presentation set, ready for your special occasion.

(We’re also proud to say that our sustainable packaging is Forest Stewardship Council approved, which means its production hasn’t harmed the world’s forests – find out more here.)

Watch the video below or click here to discover exactly what’s inside the inner gift presentation box.

&
Personalised Gift Cards

Our Gift Message Cards

When you purchase any item of jewellery from our website, you can choose to include a FREE personalised gift message card with your order.

Along with our elegant, free gift packaging you’ll be able to personalise one of our stylish credit card sized gift message cards to include with your order.

gift message card


HOW DOES IT WORK?

Once you have completed checkout, you’ll reach the Order Confirmation Page.

Here, you’ll be prompted to request the free Gift Message Card.

Simply write your message in the space provided, and submit it. We’ll make sure the card is included with your order.

CAN I WRITE ANY MESSAGE ON THE CARD?

You’ll be able to personalise the card with a message of your choice, up to the space available.

However, we can only print the British alphabet and numbers from 0 to 9, and no special characters or emojis are supported.

gift message card


DO YOU ALSO SUPPLY GIFT PACKAGING?

Yes, beautiful presentation of your jewellery is very important to us. We want you to feel delighted when it arrives!

That’s why every item we sell comes nestled within one of our FREE exclusive gift sets, while the outer packaging is plain so as not to spoil any surprises.

Find out more about what is in each Diamond Store box here.

MORE QUESTIONS?

Our Personal Shoppers are always happy to help. Click here to get in touch with us from Monday to Friday, 9am to 5pm.

Carbon Offset

Carbon Certificates

The Diamond Store is committed to combating climate change and sustaining our world for future generations through decarbonisation.

forest

Carbon offsetting is a way to compensate for our emissions by funding an equivalent carbon dioxide saving elsewhere.

We work with Carbon Footprint™ to balance out emissions from our offices, warehouse, workshop and staff commutes.

We are also very stringent with our shipping services. Currently, 99.5% of our shipments go out with DPD couriers who are committed to a zero-emissions strategy.

For more information, please see the corresponding certifications below.

forest

CARBON FOOTPRINT™ Our latest carbon offset certificate from Carbon Footprint™ shows how we support a global portfolio of Verified Carbon Reduction Projects.

VIEW CERTIFICATE

forest

CARBON CERTIFICATE FROM DPD

Our principal delivery company, DPD, which handles 99.5% of our shipments, is committed to a strategy of zero-emission deliveries.

In 2022, DPD was named Sustainable Business of the Year in the UK’s Business Champion Awards. The company has electrified 1,500 vehicles in its UK fleet, pledged to ‘deliver green’ to 30 large UK cities by 2023 and created the Eco Fund to support community-based sustainable projects.

VIEW CERTIFICATE

Read more about The Diamond Store’s sustainability commitment here. Including our recycled metals, sustainable lab grown diamonds, conflict-free mined diamonds, FSC approved packaging, and more.

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PRODUCT INFORMATION
DIAMOND CHOICES
PRODUCT SPECIFICATIONS
PRODUCT INFORMATION

Uncover the Diana 5.90ct Lab Diamond Pear Cut Engagement Ring in Platinum G/VS1. A traditional pear cut ring is modernised with a halo of smaller diamonds surrounding it, maximising the central, consciously crafted stone’s magnitude even further. The band, made from the finest recycled platinum, benefits from a half-eternity of pavé diamonds. This ensures a comfortable fit, with the illusion of never-ending stones. Ask the special question with Diana for an unbeatable proposal. Benefit from free worldwide delivery, sleek packaging and a 5-year guarantee, when shopping with The Diamond Store.
*The sustainable luxury choice. Lab-grown diamonds are chemically and optically identical in brilliance and beauty to a natural mined diamond.

DIAMOND CHOICES

Opt for our sustainable lab grown diamonds set in ethically sourced metals for a beautiful, Earth friendly choice that gives you more carats for your spend.

Or choose our stunning, certified mined diamonds for an enduring legacy from the world's premier, conflict-free sources.

Learn More

MINED
SUSTAINABLE LAB
CLARITY

What Diamond Clarity is right for you

What would be the difference if you moved up a grade?

Your diamond will have extra sparkle and radiance that will catch the eye just that little bit more.

Clarity Chart

G/SI2
£3,499 VIEW
G/VS2
£1,949 VIEW
DIAMOND SIZE

Which Diamond Size is right for you

Larger diamonds are rarer and more valuable, now and will also be in the future.

When considering the size, think about what she or your friends wear and how you would like to compare.

Size Chart

1.00ct
£1,949 VIEW
1.35ct
£3,499 VIEW
SETTING

Which Setting Is Right For you

All our 18K Gold and Platinum rings are UK hallmarked

White Gold or Platinum?

18K White Gold
£1,949 VIEW
CLARITY

What Diamond Clarity is right for you

What would be the difference if you moved up a grade?

Your diamond will have extra sparkle and radiance that will catch the eye just that little bit more.

Clarity Chart

F/VS1
£949 VIEW
DIAMOND SIZE

Which Diamond Size is right for you

Larger diamonds are rarer and more valuable, now and will also be in the future.

When considering the size, think about what she or your friends wear and how you would like to compare.

Size Chart

1.00ct
£949 VIEW
1.60ct
£1,449 VIEW
2.10ct
£1,799 VIEW
2.60ct
£2,349 VIEW
3.60ct
£2,449 VIEW
SETTING

Which Setting Is Right For you

All our 18K Gold and Platinum rings are UK hallmarked

White Gold or Platinum?

18K White Gold
£999 VIEW
18K Yellow Gold
£2,449 VIEW
PRODUCT SPECIFICATIONS
Metal :

Platinum

Total Diamond Weight :

5.90ct

Dimensions :

W2.10mm x H7.90mm

Certificates :

View IGI Certificate

Setting :

Claw

Main Stone Shape :

Pear

Diamond Quality :

G/VS1

Main Stone :

Diamond

Gem Information :
UK Hallmarked :

Yes

UK Handcrafted :

Yes

Conflict Free Diamonds :

Yes

Nickel Free :

Yes

Please note weights, gem colours and sizes are approximate and may vary slightly.

PayPal Credit

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Apply for PayPal Credit

A credit line you can use anywhere PayPal is accepted. Just choose an option that works for today’s £3,299 purchase.

£549.83/mo. for 6 months

Purchase APR:
0.0%
Est. interest:
£0.00
Total:
£3,299

£274.92/mo. for 12 months

Purchase APR:
0.0%
Est. interest:
£0.00
Total:
£3,299

£152.08/mo. for 24 months

Purchase APR:
9.9%
Est. interest:
£351
Total:
£3,650

£117.45/mo. for 36 months

Purchase APR:
16.9%
Est. interest:
£929
Total:
£4,228

0% interest for 4 months

with minimum monthly payments

Representative example

Representative APR
23.9% APR
(variable)

Purchase interest rate
23.9% p.a.
(variable)

Assumed credit limit
£1,200

This example shows the typical cost of using PayPal Credit without offers. Subject to status. Terms and Conditions apply.

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LUXURIOUS PACKAGING

Every piece is packaged beautifully, ready to gift without the need for wrapping. Delivered discreetly, so no surprises are spoiled.

LEARN MORE


PERSONALISED GIFT CARDS

Personalise your gift with a heartfelt message, to make it extra special.

LEARN MORE
Member of the National Association of Jewellers
One of the best companies to work for according to The Sunday Times
Butterfly Mark
Professional Jeweller Awards 2022 Winner
Professional Jeweller Awards 2023 Finalists
The United Kingdom Weddings and Honeymoons Awards 2024 Finalists
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Copyright © 2025. All Rights Reserved.
| Registered in England and Wales Co No. 05736216
Regalian Ltd t/a The Diamond Store is a credit broker for the purpose of introducing credit provided by the lender Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, Authorised and Regulated by the Financial Conduct Authority, and PayPal Credit is provided by PayPal. PayPal Credit is a trading name of PayPal UK Ltd, 5 Fleet Place, London, United Kingdom, EC4M 7RD. Regalian Ltd is authorised and regulated by the Financial Conduct Authority with registration number 731102. are Authorised and Regulated by the Financial Conduct Authority. We are a credit broker, not a lender – credit is subject to status and affordability, and is provided by a panel of lenders of whom we have a commercial relationship. Terms & Conditions Apply. Credit is provided subject to age and status. Minimum spend applies. PayPal Pay in 3: PayPal Pay in 3 is not regulated by the Financial Conduct Authority. Pay in 3 eligibility is subject to status and approval. 18+. UK residents only. Pay in 3 is a form of credit, may not be suitable for everyone. Use may affect your credit score or make credit less accessible or more expensive for you. Consider if affordable for you. See product terms for more details.

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Our Returns Policy

We want you to feel completely confident when you shop with us. That’s why we offer FREE 30-day returns for refunds and 60-day exchanges across the UK and Northern Ireland.

If you’ve ordered a ring smaller than a size J or larger than a size Q, don’t worry — these are custom sizes, but we’re still happy to offer a free exchange or resizing if the fit isn’t quite right.

Cancelling an Order Before Dispatch

Changed your mind? No problem — you can cancel your order anytime before it’s been dispatched.

Just reach out to our friendly team via Live Chat, by email at customerservice@thediamondstore.com, or give us a call on 0345 084 1200 (or +44 345 084 1200 if calling from outside the UK). Please have your order number handy to help us assist you as quickly as possible.

Product Measurements

Please note that for rings smaller than size J or larger than size Q, the width may vary slightly (up to 10%) due to the crafting process. If you need any adjustments, we’re happy to help.

Damaged or Defective Items

If your item arrives damaged or defective, we’ll make it right — fast. We’ll either repair or replace it at no cost to you, or provide a refund once it’s been assessed by our head jeweller.

Our standard returns policy is 30 days to return, and 60 days to exchange.

Our 5 Year Warranty.

We stand by the quality of our jewellery. That’s why all our pieces come with a 5-year warranty against defects in materials or craftsmanship. Every item is also fully hallmarked according to UK legislation, confirming its authenticity and origin.

How Refunds Work

Once we’ve received and inspected your returned jewellery, we’ll process your refund right away and email you to confirm. Depending on your bank or payment provider, it may take 3 to 5 working days to show up on your statement.

We’ll always refund you via the same method you used to make your purchase — whether that was credit or debit card, PayPal, Pay4Later Finance, bank transfer, or another option.

To avoid delays, make sure to include the returns label print-out with your parcel. This helps us identify your return quickly.

Ethically Sourced Diamonds

We’re proud to say that all our diamonds are conflict-free and fully compliant with United Nations regulations. When you buy from us, you’re choosing ethical beauty.

Need Help? Get in Touch

We’re here whenever you need us.

📧 Email us: customerservice@thediamondstore.com or returns@thediamondstore.co.uk

📞 Call us: 0345 084 1200 (UK) or +44 345 084 1200 (International)

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RING SIZES & RINGS SIZERS

WHAT IS RING SIZE?

‘Ring size’ is a measurement that refers to the inside circumference of a ring. It’s important to know your correct ring size before buying a ring, otherwise it won’t fit properly.

Different countries use different standardised systems for denoting ring size.

On the right, there’s a chart with the 3 most common ring size systems used in UK, USA and internationally. For Australian sizes simply refer to the UK sizes, which are the same.

WHY USE A RING SIZER?

Ring size is one of those things we think we’ll always remember… but never actually do!

It is very important to find out the correct ring size whether the ring is for you or another person. This measurement enables us to provide you with a perfectly fitting ring. A ring that is so small you cannot get it on – or so big it falls off – can really ruin a big moment!

OUR RING SIZER APP

Our free Ring Sizer App is accurate and easy to use!

Find out a ring size in UK, EU or USA measurements. All sizes F – Z included, from smallest to largest finger.

Simply place your loved one’s existing ring on your phone screen, then adjust the circle until it fits the inside of the ring exactly.

This app helps you keep an engagement ring or a special gift a surprise and saves you a trip to the jewellers.

apple download
Google download

CROSS CHECKING AN EXISTING RING

If you have a printer and an existing ring (or measurement) then print this PDF and use it in conjunction with our app.
DOWNLOAD RING SIZER GUIDE

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Sustainable Lab Diamonds vs Conflict-free Mined Diamonds

What is the difference between our sustainable lab grown and conflict-free mined diamonds? Is it possible to tell them apart? We explain the differences in origin, quality and price between the two, so that you can make an informed choice.


 

Are sustainable lab grown and mined diamonds the same?

They are exactly alike optically, physically and chemically.

The main difference is their origin:

Mined diamonds have been extracted from the Earth. They were created by Mother Nature from carbon atoms subjected to intense volcanic heat and pressure deep underground more than 3 billion years ago.

Sustainable lab grown diamonds are grown by scientists in a laboratory. They are created from a tiny shard of a mined diamond which is introduced to carbon atoms, under conditions which replicate the volcanic forces of Mother Nature.


Are lab grown diamonds sustainable and ethical?

Yes, lab grown diamonds are not extracted from the ground, which makes them environmentally sustainable and ethical as they conserve the Earth for future generations.

Does this make mined diamonds “unethical”?

No. As long as you are buying mined diamonds from a reputable jeweller that abides by the Kimberley Process, your diamonds are ethical because they are conflict-free.

Can you tell the difference by looking at the two?

No, you cannot tell the difference between a lab grown diamond and a mined diamond by looking at them.

Therefore, to protect consumers, lab grown diamonds are branded with a microscopic laser mark to distinguish them from mined diamonds.

You cannot see this mark with your naked eye, but a jeweller will be able to see it with specialist magnifying equipment.

Price – Are sustainable lab grown diamonds cheaper?

Yes, lab grown diamonds are more affordable than mined diamonds, giving you more carats for your budget.

You’ll find most of our popular jewellery ranges available in both options so you’ll be able to compare easily.

Bear in mind, however, that the precious metal setting plays a part in price. Silver is the most affordable, gold is a little more expensive, and platinum is the most expensive.

Are lab diamonds “fake diamonds”?

No, lab diamonds are not fake diamonds. Sometimes people confuse lab grown diamonds with simulants like cubic zirconia, which are not diamonds.

But this is not the case with lab diamonds. Gemmologists (the scientists who study diamonds and gemstones) classify lab diamonds, simply, as diamonds.

Learn more about the identical characteristics of lab diamonds here.

Which has better quality?

Mined diamonds and lab diamonds are quality-graded by gemmologists in exactly the same way using the Four Cs – Cut, Colour, Clarity and Carat weight.

Therefore, your diamond (regardless of whether it is lab grown or mined) will simply be graded at the quality it has, for example, Premium Quality, H/Si or E/Vs.

Having said that, since lab diamonds are more affordable than mined diamonds per carat, you’ll usually be able to access a much better diamond grade/quality for your budget if you choose lab grown.

So are sustainable lab grown diamonds better?

“Better” is very subjective. It’s like cars. If someone asks you if an Aston Martin or a Ferrari is better, your answer would depend on your individual requirements.

It is the same with lab grown diamonds and mined diamonds.

Sustainable Lab Diamonds vs Mined Diamonds – Which should you choose?

Conflict-free mined diamonds are simply beautiful to look at and last a lifetime. A rare luxury created by Mother Nature, they come with the legacy of having been sourced from the Earth.

Sustainable lab grown diamonds are also stunning to gaze at, and they also last a lifetime. More affordable than mined diamonds, they are additionally sustainable and ethical.

In conclusion, both lab grown diamonds and mined diamonds are luxurious, beautiful and sparkling options – and they will both make wonderful gifts for a lifetime. Now, you simply have more choice.

Need more advice? Don’t hesitate to contact us

If you have any questions, we’re always happy to chat. Just email us on sales@thediamondstore.co.uk.

Upgrading clarity/sparkle

High quality grades of diamonds.


Because we only sell 5 different grades of diamonds, all of which are of a high quality, the diamond you have already chosen won’t have any obvious flaws. But if your priority is for your diamond to have the best possible quality and sparkle, then investing in the next grade up makes good sense.

What would be the difference if you moved up a grade? Your diamond will look more radiant, gain in value – and you’ll get the very best quality for your budget.

Upgrading size/carat weight

Upgrading the size of your diamond means increasing its carat weight

The more carats a diamond weighs, the bigger it is.


But when is a size upgrade recommended?

The larger the diamond is, the rarer it is to find. That’s why an increase in size is a larger investment. When considering the size, think about what she or your friends wear and how you would like to compare.

Below you can see the different diamond sizes we sell. If you’d like a real sense of scale, follow this link for “real size” printable images of our diamonds: Real size diamond measurements.

 

round shape diamond
Round Brilliant Cut Diamonds Diameter mm
0.10ct 3.00mm
0.20ct 3.80mm
0.25ct 4.00mm
0.30ct 4.20mm
0.40ct 4.80mm
0.50ct 5.00mm
0.70ct 5.75mm
1.00ct 6.50mm
square shape diamond
Square Princess Cut Diamonds Width mm
0.10ct 2.50mm
0.20ct 3.20mm
0.25ct 3.40mm
0.30ct 3.60mm
0.40ct 4.00mm
0.50ct 4.40mm
0.70ct 4.80mm
1.00ct 5.50mm
emerald shape diamond
Emerald Cut Diamonds Length & Width
0.25ct 4mm x 3mm
0.33ct 5mm x 3mm
0.50ct 8mm x 4mm
1.00ct 10mm x 5mm
pear shape diamond
Pear Shape Diamonds Length & Width
0.30ct 5mm x 3mm
0.50ct 6mm x 4mm
1.00ct 8mm x 5mm
marquise shape diamond
Marquise Diamonds Length & Width
0.25ct 5mm x 3mm
0.50ct 8mm x 4mm
0.75ct 9mm x 4.5mm
1.00ct 10mm x 5mm

Upgrading setting

White gold or platinum?


The main advantage of white gold over platinum is that it’s much more affordable. However, the disadvantage of white gold is that you may need to re­coat your jewellery in rhodium once or twice a year. This adds to its overall cost over time, whereas platinum, more expensive to start with, will never require any maintenance.

If you’d like to read more about how white gold and platinum compare, follow this link: White Gold Vs Platinum.