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?

Marquise Diamond Rings

Our exquisite marquise cut diamond rings provide a unique vintage shape with a brilliant dance of light. The perfect gift that stands out from the crowd.

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Amora Marquise 0.50ct Engagement Ring F/VS Set in 18K White Gold
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Amora Marquise 0.50ct Engagement Ring F/VS Set in 18K White Gold

Item Ref: UT03-72HXU3Y

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Amora Marquise Plain Solitaire Engagement Ring, featuring a 0.50ct F/VS marquise-cut diamond set in the finest recycled white gold. A solitaire ring is iconic for a reason - its timeless design exudes elegance and never goes out of...

£1,949

From £65.58 per month

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Amora Marquise 0.50ct Lab Diamond Engagement Ring F/VS Set in Platinum
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21% PRICE DROP

Amora Marquise 0.50ct Lab Diamond Engagement Ring F/VS Set in Platinum

Item Ref: NDUT03-72HXU3S

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Amora Marquise Plain Solitaire Engagement Ring, featuring a 0.50ct F/VS marquise-cut diamond set in the finest recycled platinum. A solitaire ring is iconic for a reason - its timeless design exudes elegance and never goes out of style....

£889

From £29.91 per month

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Amora Marquise 0.50ct Lab Diamond Engagement Ring F/VS Set in 18K White Gold
NEXT DAY DELIVERY
NEW IN

Amora Marquise 0.50ct Lab Diamond Engagement Ring F/VS Set in 18K White Gold

Item Ref: NDUT03-72HXU3Y

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Amora Marquise Plain Solitaire Engagement Ring, featuring a 0.50ct F/VS marquise-cut diamond set in the finest recycled white gold. A solitaire ring is iconic for a reason - its timeless design exudes elegance and never goes out of...

£879

From £29.57 per month

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Certified Marquise 18K Gold Diamond Engagement Ring 0.25CT-F-G/VS
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Certified Marquise 18K Gold Diamond Engagement Ring 0.25CT-F-G/VS

Item Ref: UT36-47XUA

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

The exquisite cut of the 0.25CT Marquise diamond ensures the stone sparkles brilliantly from every facet. The 18K yellow gold band and claw setting present the ring's 0.25CT F-G/VS Quality Diamond perfectly and your lucky lady will cherish this ring...

£799

From £26.88 per month

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Engagement Ring Certified Marquise 18K White Gold Diamond 0.25CT G/VS
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Engagement Ring Certified Marquise 18K White Gold Diamond 0.25CT G/VS

Item Ref: UT36-47XUY.F.0

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

If you're looking for the perfect ring to get down on one knee with then this stunning Marquise diamond ring is sure to please. This classically designed ring features 0.25CT of F-G/VS Quality Diamonds which are held in a claw...

£799

From £26.88 per month

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Engagement Ring Certified Marquise Diamond 0.50CT G/VS 18K White Gold
NEXT DAY DELIVERY
NEW IN

Engagement Ring Certified Marquise Diamond 0.50CT G/VS 18K White Gold

Item Ref: UT36-72XUY.K.0

AVAILABILITY: In stock (1 item)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

The exquisite cut of the 0.50CT Marquise diamond ensures the stone sparkles brilliantly from every facet. The 18K white gold band and claw setting present the ring's 0.50CT F-G/VS Quality Diamond perfectly and your lucky lady will cherish this ring...

£1,599

From £53.8 per month

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Certified Marquise 18K Gold Diamond Engagement Ring 0.25CT-G-H/SI
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Certified Marquise 18K Gold Diamond Engagement Ring 0.25CT-G-H/SI

Item Ref: UT36-47JUA.L.0

AVAILABILITY: In stock (1 item)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

The remarkable cut of this Marquise diamond 18K yellow gold ring makes it an eye-catching piece of jewellery which your bride-to-be will be delighted to wear. The claw setting holds a beautiful 0.25CT G-H/SI Quality Diamond which complements the yellow...

£649

From £21.84 per month

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Engagement Ring Certified Marquise Diamond 0.25CT H/SI 18K White Gold
NEXT DAY DELIVERY
NEW IN

Engagement Ring Certified Marquise Diamond 0.25CT H/SI 18K White Gold

Item Ref: UT36-47JUY.Q.0

AVAILABILITY: In stock (1 item)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

The remarkable cut of this marquise diamond 18K white gold ring makes it an eye-catching piece of jewellery which your bride-to-be will be delighted to wear. The claw setting holds a beautiful 0.25CT G-H/SI Quality Diamond which complements the white...

£649

From £21.84 per month

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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!

REQUEST YOUR RING SIZER

HERE'S A STEP BY STEP GUIDE TO MEASURING YOUR RING SIZE AT HOME.

Watch the video below for our step-by-step guide to using your ring sizer. Just push one end through to make a loop, slip it onto your finger, adjust until it feels snug, and note your size.

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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