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?

Princess Engagement Rings

Bringing you contemporary luxury and elegance. Exquisite princess cut diamonds, a truly sophisticated symbol of love to mark your engagement.

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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 925 Silver
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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 925 Silver

Item Ref: NDE6229U

AVAILABILITY: In stock (1 item)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover the Princess Cut Lab Diamond Engagement Ring, with 0.25ct of lab grown H/Si diamonds, set in the finest recycled 925 silver. This beautiful, delicate engagement ring features a princess cut centre stone, a modern addition to an otherwise classic...

£219

Pay in 3 interest-free

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Princess Cut Lab Diamond Engagement Ring 0.50ct H/Si in 9K White Gold
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Princess Cut Lab Diamond Engagement Ring 0.50ct H/Si in 9K White Gold

Item Ref: NDE6220Y

AVAILABILITY: In stock (8 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£499

From £16.79 per month

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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 9K White Gold
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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 9K White Gold

Item Ref: NDE6229Y

AVAILABILITY: In stock (18 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£389

From £13.09 per month

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Katerina Lab Princess Diamond Engagement Ring 18KW Gold 0.85ct F/VS1
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Katerina Lab Princess Diamond Engagement Ring 18KW Gold 0.85ct F/VS1

Item Ref: NDUT86-72XU3Y

AVAILABILITY: In stock (27 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£999

From £33.61 per month

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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 18K Gold Vermeil
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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 18K Gold Vermeil

Item Ref: ANDE6229U

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Princess Cut Lab Diamond Engagement Ring, featuring 0.25ct of H/Si diamonds set the finest in 18ct gold vermeil. A modern princess cut diamond sits atop a golf vermeil band in a pavé setting, ensuring sparkle with every motion....

£239

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Katerina Lab Princess Diamond Engagement Ring Platinum 1.55ct F/VS1
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Katerina Lab Princess Diamond Engagement Ring Platinum 1.55ct F/VS1

Item Ref: NDUT86-322XU3S

AVAILABILITY: In stock (15 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£1,449

From £48.75 per month

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Naomi Princess Cut Lab Diamond Engagement Ring 0.50ct H/SI in 925 Silver
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Naomi Princess Cut Lab Diamond Engagement Ring 0.50ct H/SI in 925 Silver

Item Ref: NDE6273U

AVAILABILITY: In stock (1 item)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£299

Pay in 3 interest-free

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2.10ct Katerina Lab Princess Diamond Engagement Ring Platinum F/VS1
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2.10ct Katerina Lab Princess Diamond Engagement Ring Platinum F/VS1

Item Ref: NDUT86-372XU3S

AVAILABILITY: In stock (15 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£1,799

From £60.53 per month

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Katerina Lab Princess Diamond Engagement Ring Platinum 0.85ct F/VS1
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Katerina Lab Princess Diamond Engagement Ring Platinum 0.85ct F/VS1

Item Ref: NDUT86-72XU3S

AVAILABILITY: In stock (17 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£1,049

From £35.29 per month

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Katerina Lab Princess Diamond Engagement Ring 18KW Gold 1.55ct F/VS1
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Katerina Lab Princess Diamond Engagement Ring 18KW Gold 1.55ct F/VS1

Item Ref: NDUT86-322XU3Y.F.0

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

A timeless classic, this elegant lab grown diamond engagement ring features an exquisite princess cut solitaire diamond. Certified by IGI, it is claw set within a pristine 18K white gold band. If she loves sophisticated and sustainable luxury, she'll fall...

£1,449

From £48.75 per month

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Naomi Princess Cut Lab Diamond Engagement Ring 1.00ct H/SI in 9k White Gold
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Naomi Princess Cut Lab Diamond Engagement Ring 1.00ct H/SI in 9k White Gold

Item Ref: NDE6299Y

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Naomi lab diamond princess cut engagement ring, boasting a 1.00ct H/SI quality lab grown diamond, set in the finest recycled 9k white gold. The Naomi features a simple solitaire diamond in a contemporary princess cut shape, perfect for...

£899

From £30.25 per month

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Katerina 3.45ct Lab Diamond Princess Cut Engagement Ring in Platinum G/VS1
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Katerina 3.45ct Lab Diamond Princess Cut Engagement Ring in Platinum G/VS1

Item Ref: NDUT86-522IXU3S

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover the Katerina 3.45ct Lab Diamond Princess Cut Engagement Ring in Platinum G/VS1. A modern claw setting holds an impressive 3.00ct princess cut diamond, which sits proud atop a half-eternity band of pavé diamonds, set in the finest recycled platinum....

£2,499

From £84.08 per month

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Solstice Princess Cut 0.80ct Lab Diamond Engagement Ring F/VS in 9k White Gold
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Solstice Princess Cut 0.80ct Lab Diamond Engagement Ring F/VS in 9k White Gold

Item Ref: NDE6275Y

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Solstice Princess Solitaire Engagement Ring, featuring 0.80ct of lab-grown diamonds – formed with a centre stone of 0.50ct, and 0.30ct of sidestones – set in the finest recycled 9k white gold. This elegant ring features a princess cut...

£699

From £23.52 per month

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Roxy Lab Diamond Engagement Side Stone Ring in 18KW Gold 0.98CT F/VS1
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Roxy Lab Diamond Engagement Side Stone Ring in 18KW Gold 0.98CT F/VS1

Item Ref: NDUT51-72GXU3Y

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

This sparkling 0.98CT diamond halo ring features an exceptional, sustainable lab grown solitaire in a beautiful princess cut. Handcrafted with a dazzling halo and a fine 18K white gold band studded with sidestones, this is a ring she'll adore for...

£999

From £33.61 per month

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Princess Cut Lab Diamond Engagement Ring 0.50ct H/Si in 9K Gold
NEXT DAY DELIVERY
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Princess Cut Lab Diamond Engagement Ring 0.50ct H/Si in 9K Gold

Item Ref: NDE6220.F.0

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Classic and sophisticated, this princess cut diamond ring features sustainable lab grown diamonds that create exquisite sparkle. The polished setting of yellow gold looks and feels luxurious on the hand. *The sustainable luxury choice. Lab-grown diamonds are chemically and optically...

£499

From £16.79 per month

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Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 9K Gold
NEXT DAY DELIVERY
NEW IN

Princess Cut Lab Diamond Engagement Ring 0.25ct H/Si in 9K Gold

Item Ref: NDE6229

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Sophisticated and radiant, this princess cut diamond ring in luscious yellow gold features sustainable lab grown diamonds that create exquisite sparkle. The polished setting of white gold looks and feels luxurious on the hand. *The sustainable luxury choice. Lab-grown diamonds...

£389

From £13.09 per month

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Naomi Princess Cut Lab Diamond Engagement Ring 0.33ct H/SI in 925 Silver
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NEW IN

Naomi Princess Cut Lab Diamond Engagement Ring 0.33ct H/SI in 925 Silver

Item Ref: NDE6272U

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Naomi lab diamond princess cut engagement ring, boasting a 0.33ct H/SI quality lab grown diamond, set in the finest recycled 925 sterling silver. The Naomi features a simple solitaire diamond in a contemporary princess cut shape, perfect for...

£249

Pay in 3 interest-free

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Sidestone Lab Diamond Ring Eleri 0.90ct G/Vs1 Princess Platinum
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Sidestone Lab Diamond Ring Eleri 0.90ct G/Vs1 Princess Platinum

Item Ref: NDUT40-HXU3S.F.0

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Any bride-to-be would be proud to show off this stunning ring. The handcrafted setting holds a magnificent lab grown solitaire in G/Vs quality to guarantee showstopping sparkle, with channel set diamonds on the platinum band for added luxury. A ring...

£965

From £32.47 per month

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Katerina Lab Princess Diamond Engagement Ring 18K Gold 0.85ct F/VS1
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Katerina Lab Princess Diamond Engagement Ring 18K Gold 0.85ct F/VS1

Item Ref: NDUT86-72XU3A

AVAILABILITY: In stock (3 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£999

From £33.61 per month

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Certified Lucy Platinum Diamond Engagement Ring 0.33CT-F-G/VS
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Certified Lucy Platinum Diamond Engagement Ring 0.33CT-F-G/VS

Item Ref: UT32-55XUS

AVAILABILITY: In stock (2 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£1,099

From £36.98 per month

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Katerina Princess Diamond Engagement Ring 18K Gold 0.85ct G/SI2
NEXT DAY DELIVERY
NEW IN

Katerina Princess Diamond Engagement Ring 18K Gold 0.85ct G/SI2

Item Ref: UT86-72IU4A

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Elegant and striking, this diamond shoulder ring features a GIA-certified, princess cut centre stone that plays beautifully off the stunning round cut shoulder diamonds. Its beautiful lightplay and brilliance create a sensationally eye-catching engagement ring. Centre Stone: 0.50ct.

£1,849

From £62.21 per month

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Katerina 3.45ct Lab Diamond Princess Cut Engagement Ring in 18K White Gold G/VS1
NEXT DAY DELIVERY
NEW IN

Katerina 3.45ct Lab Diamond Princess Cut Engagement Ring in 18K White Gold G/VS1

Item Ref: NDUT86-522IXU3Y

AVAILABILITY: In stock (3 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

£2,449

From £82.4 per month

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2.10ct Katerina Lab Princess Diamond Engagement Ring 18KW Gold F/VS1
NEXT DAY DELIVERY
NEW IN

2.10ct Katerina Lab Princess Diamond Engagement Ring 18KW Gold F/VS1

Item Ref: NDUT86-372XU3Y.F.0

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

A magnificent certified Katerina Engagement Ring in 18K White Gold. Claw+Pave setting. 2.10CT of F/VS1 quality diamonds. Free UK delivery and a 5 year guarantee. 1.50ct IGI Certified Centre Stone - Excellent Cut-Polish-Symmetry. *The sustainable luxury choice. Lab-grown diamonds are...

£1,799

From £60.53 per month

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Naomi Princess Cut Lab Diamond Engagement Ring 0.33ct H/SI in 18k Gold Vermeil
NEXT DAY DELIVERY
NEW IN

Naomi Princess Cut Lab Diamond Engagement Ring 0.33ct H/SI in 18k Gold Vermeil

Item Ref: ANDE6272U

AVAILABILITY: In stock (0 items)

PRODUCT TYPE: Rings

VENDOR: The Diamond Store

Discover our Naomi lab diamond princess cut engagement ring, boasting a 0.33ct H/SI quality lab grown diamond, set in the finest recycled 18k gold vermeil. The Naomi features a simple solitaire diamond in a contemporary princess cut shape, perfect for...

£249

Pay in 3 interest-free

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Silver, Platinum, and Gold Princess Cut Engagement Rings

With sharp, clean lines and a modern vibe, a princess cut engagement ring delivers exceptional fire and brilliance — making it one of the most sought-after diamond cuts.

Each ring in our collection is consciously crafted from recycled precious metals, with bands available in platinum, silver, and 9k or 18k gold. You can choose between conflict-free mined diamonds or lab-grown diamonds that are chemically and optically identical, offering the same beauty and enduring quality.

From the timeless solitaire — where a single princess-cut diamond sits in a classic four-prong setting — to pavé bands that add extra sparkle, our designs highlight the stone’s radiant shape. For those who love the richness of yellow gold, our gold princess cut engagement rings offer a striking blend of warmth and brilliance.

Shop our range to find your princess cut engagement ring - one that makes you feel like royalty.

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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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