FREE WORLDWIDE DELIVERY 30 DAY RETURNS / 60 DAY EXCHANGE 5 YEAR GUARANTEE 0% APR FINANCE UK HANDCRAFTED
FREE WORLDWIDE DELIVERY 30 DAY RETURNS / 60 DAY EXCHANGE 5 YEAR GUARANTEE 0% APR FINANCE UK HANDCRAFTED
Bag (0) 0
Bag (0) 0

WHAT ARE YOU LOOKING FOR?

Show Filters (8)
Featured Best selling Alphabetically, A-Z Alphabetically, Z-A Price, low to high Price, high to low Date, old to new Date, new to old

Showing 8 products

Clear All
Astra 3.20ct Lab Sapphire and Diamond Solitaire Pear Cut Necklace in Silver
NEXT DAY DELIVERY
New

Astra 3.20ct Lab Sapphire and Diamond Solitaire Pear Cut Necklace in Silver

Item Ref: NID4224-UU

AVAILABILITY: In stock (37 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

Unearth the Astra Lab Sapphire and Diamond Solitaire Pear Cut Necklace, with a 3.20ct lab grown sapphire amongst 0.08CT of H/SI quality diamonds. The large, rich blue sapphire hangs delicately on the chain, made from the finest sterling silver. An...

£149

Pay in 3 interest-free

Compare
Astra 3.20ct Lab Sapphire and Diamond Solitaire Pear Cut Necklace in 18K Gold Vermeil
NEXT DAY DELIVERY
New

Astra 3.20ct Lab Sapphire and Diamond Solitaire Pear Cut Necklace in 18K Gold Vermeil

Item Ref: ANID4224-UU

AVAILABILITY: In stock (76 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

Unearth the Astra Lab Sapphire and Diamond Solitaire Pear Cut Necklace, with a 3.20ct lab grown sapphire amongst 0.08CT of H/SI quality lab diamonds. The large, rich blue sapphire hangs delicately on the chain, made from the finest 18k gold...

£149

Pay in 3 interest-free

Compare
Sapphire 7 x 5 mm 9K Yellow Gold Pendant Necklace
NEXT DAY DELIVERY
New

Sapphire 7 x 5 mm 9K Yellow Gold Pendant Necklace

Item Ref: B3225

AVAILABILITY: In stock (18 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

This gorgeous sapphire necklace is one of our most elegant and popular pieces of fine gemstone jewellery, perfect for special birthdays and anniversaries. The necklace features a large oval shaped blue sapphire that's claw set in a polished yellow gold...

£229

Pay in 3 interest-free

Compare
Sapphire 7 x 5mm 18K White Gold Pendant Necklace
NEXT DAY DELIVERY
New

Sapphire 7 x 5mm 18K White Gold Pendant Necklace

Item Ref: FER24-UY

AVAILABILITY: In stock (9 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

A superb Sapphire Pendant in 18K White Gold. Claw setting. Free UK delivery and a 5 year guarantee.

£299

Pay in 3 interest-free

Compare
Sapphire 7 x 5mm 18K Yellow Gold Pendant Necklace FER24-U
NEXT DAY DELIVERY
New

Sapphire 7 x 5mm 18K Yellow Gold Pendant Necklace FER24-U

Item Ref: FER24-U

AVAILABILITY: In stock (20 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

An alluring Sapphire Pendant in 18K Yellow Gold. Claw setting. Free UK delivery and a 5 year guarantee.

£299

Pay in 3 interest-free

Compare
Sapphire 7 x 5 mm 9K White Gold Pendant Necklace
NEXT DAY DELIVERY
New

Sapphire 7 x 5 mm 9K White Gold Pendant Necklace

Item Ref: B3736

AVAILABILITY: In stock (22 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

A beautiful, dainty sapphire pendant handcrafted to perfection in polished 9K white gold. As September's birthstone it's the ideal gift for autumn babes, or simply a luxurious little treat for someone special at Christmas or Valentine's. Chain included.

£229

Pay in 3 interest-free

Compare
Sapphire 5 x 4mm 18K White Gold Pendant Necklace
NEXT DAY DELIVERY
New

Sapphire 5 x 4mm 18K White Gold Pendant Necklace

Item Ref: FER23-UY

AVAILABILITY: In stock (24 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

Sapphire is the birthstone for September so if you know anyone with a birthday in this month, this beautiful necklace would be a touching gift. The captivating large oval sapphire is claw set and hangs delicately from an 18K white...

£185

Pay in 3 interest-free

Compare
Astra 2.40ct Lab Sapphire and Diamond Solitaire Cushion Cut Necklace in Silver
NEXT DAY DELIVERY
New

Astra 2.40ct Lab Sapphire and Diamond Solitaire Cushion Cut Necklace in Silver

Item Ref: NID4223-UU

AVAILABILITY: In stock (18 items)

PRODUCT TYPE: Necklaces

VENDOR: The Diamond Store

Unearth the Astra Lab Sapphire and Diamond Solitaire Cushion Cut Necklace, with a 2.40ct lab grown sapphire amongst 0.08CT of H/SI quality diamonds. The large cushion cut sapphire hangs delicately, with a smattering of smaller, encapsulated diamonds interspersed on the...

£149

Pay in 3 interest-free

Compare
Butterfly Mark
Professional Jeweller Awards 2022 Winner
Professional Jeweller Awards 2023 Finalists
The United Kingdom Weddings and Honeymoons Awards 2024 Finalists
Member of the National Association of Jewellers
OUR COMPANY
HELP & SUPPORT
CUSTOMER SERVICE

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.

TOP

WHAT ARE YOU LOOKING FOR?

CLOSE
MY BAG - 0 ITEMS
Your shopping bag is empty.

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 Guarantee.

We stand by the quality of our jewellery. That’s why all our pieces come with a 5-year guarantee 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)

Compare

No products were added to the compare

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

Thanks for contacting us. We'll get back to you as soon as possible.

Continue shopping