Our platinum round diamond engagement rings pair the world's most popular diamond cut with the unrivalled strength of platinum, for a classic symbol of your devotion.
Showing 178 products
Item Ref: NDUT26-422HXU3S
AVAILABILITY: In stock (3 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A spectacular certified Elysia Engagement Ring in Platinum. Claw setting. 2.00CT of F/VS1 quality diamonds. Free UK delivery and a 5 year guarantee. 2.00ct IGI Certified Centre Stone - Excellent Cut-Polish-Symmetry. *The sustainable luxury choice. Lab-grown diamonds are chemically and...
From £73.31 per month
Item Ref: S3488.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This cluster set diamond engagement ring is skillfully handcrafted with several small diamonds to create the look of a half-carat solitaire - whilst only featuring 0.17 carats in total. The setting not only provides eye-catching brilliance but also an exceptional...
From £20.83 per month
Item Ref: IYD35-9JUS.L.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A spectacular Men's Diamond Ring in Platinum. Rub Over setting. 0.07CT of H/SI quality diamonds. Free UK delivery and a 5 year guarantee.
From £32.94 per month
Item Ref: UT74-72IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
With exquisite elegance, this luxurious halo ring with sidestones is an heirloom piece she'll cherish forever. Handcrafted, it's set with a high-grade diamonds in the finest platinum. The solitaire comes with a diamond certificate from GIA, the world's topmost authority...
From £55.48 per month
Item Ref: UT56-92IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This sumptuous solitaire with diamond shoulders will make her feel very luxurious and special on the day of your proposal. Beautifully handcrafted with a total of 1.15CT diamonds, the setting is made of heirloom quality platinum. The superlative round brilliant...
From £105.95 per month
Item Ref: UT56-72GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A special solitaire with diamond-studded shoulders, this exquisite handcrafted ring in platinum is sure to delight and impress her. The centre stone is graded at G/VS2 quality by the world's topmost gemmological authority, GIA. Its opulent contemporary design showcases a...
From £74.86 per month
Item Ref: UT27-92GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A delicately beautiful ring, the Grace Platinum engagement ring would be an excellent choice for anyone who loves classic beauty in their jewellery collection. This ring features a glistening 0.70CT G/VS Quality Diamond which is held securely in a four...
From £107.63 per month
Item Ref: UT57-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite diamond sidestone ring showcases a radiant solitaire that's certified at G/SI2 quality by GIA, the world's principal gemmological authority. The lustrous platinum band is channel set with dazzling accent diamonds that draw the focus to the centre stone....
From £67.26 per month
Item Ref: UT26-55JUS.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The natural beauty of diamonds is showcased to stunning effect in this classic Elysia Platinum engagement ring. The ring features a 0.33CT H/SI Quality Diamond which glistens and sparkles against the Platinum band. This ring is understated beauty at its...
From £33.61 per month
Item Ref: NDUT27-47XUS.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Any bride-to-be will be proud to show off this dazzling Grace platinum diamond ring. The handcrafted claw setting holds a beautiful 0.25CT round lab grown diamond in a G/Vs grade that exudes exquisite sparkle. A ring that's designed to captivate...
From £25.2 per month
Item Ref: UT23-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A timeless classic, this low set Chloe Platinum ring would be an excellent choice to pop the question with and will continue to delight and sparkle for many years to come. The 0.50CT G/SI2 Quality Diamond glistens from the centre...
From £56.15 per month
Item Ref: NDUT26-47XUS
AVAILABILITY: Out of Stock
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The handcrafted elegance of this exquisite solitaire ring ensures the H/Si quality lab grown diamond in the centre sparkles at its brightest against a fine platinum band. With exceptional quality, this engagement ring is a beautiful symbol of love she'll...
From £16.32 per month
Item Ref: NDUT24-372IXU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
An eye-catching certified Lily Engagement Ring in Platinum. Claw setting. 1.50CT 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 chemically and...
From £46.6 per month
Item Ref: NDUT50-372IXU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A luxurious classic, this beautiful lab grown diamond halo ring with sidestones is a stunning symbol of love. It features an exquisite round cut solitaire certified by IGI, one of the most respected international diamond grading institutions. Handcrafted in platinum,...
From £70.29 per month
Item Ref: UT24-55JUS
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The delicate beauty of the Lily Platinum engagement ring is breathtaking. This elegant ring features a 0.33CT G-H/SI Quality Diamond which glistens against the Platinum band to stunning effect. The Lily engagement ring is pure understated elegance. Certificate Information: Official...
From £27.76 per month
Item Ref: NDUT27-55JUS.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Any bride-to-be will be proud to show off this dazzling Grace platinum diamond ring thanks to the elegant design. The handcrafted claw setting holds a beautiful 0.33CT round lab grown diamond in a white and sparkling H/Si quality. A ring...
From £25.07 per month
Item Ref: UT72-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This ring's exquisite detail includes a round brilliant cut solitaire certified by GIA. Enhancing its superb lightplay is a double row of smaller diamonds on the halo and accent diamonds on the band. This means your ring produces magnificent diamond...
From £75.67 per month
Item Ref: UT23-55XUS
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you are on bended knee you can be confident that this stunning ring will melt the heart of your loved one and be a sparkling symbol of your love and commitment. This exceptional low set Chloe Platinum engagement ring...
From £39.0 per month
Item Ref: NDUT23-47XUS
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Mark the next chapter in the story of your love with this brilliant diamond engagement ring. Set in gleaming platinum and cut to our exacting standards, this striking lab grown diamond integrates science and art to bring you uncompromising quality...
From £24.39 per month
Item Ref: UT23-55JUS.P.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A timeless classic, this low set Chloe Platinum ring would be an excellent choice to pop the question with and will continue to delight and sparkle for many years to come. The 0.33CT G-H/SI Quality Diamond glistens from the centre...
From £33.61 per month
Item Ref: UT23-72GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you are on bended knee you can be confident that this stunning ring will melt the heart of your loved one and be a sparkling symbol of your love and commitment. This exceptional low set Chloe Platinum engagement ring...
From £64.9 per month
Item Ref: NDUT26-372HXU3S
AVAILABILITY: In stock (2 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A wonderful certified Elysia Engagement Ring in Platinum. Claw setting. 1.50CT 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 chemically and...
From £65.58 per month
Item Ref: NDUT73-372XU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
With a classic design, this stunning ring features a sparkling 1.50-carat lab grown solitaire, and around it, a halo crafted in a luxurious cushion shape. Sidestones add opulence and sparkle to the band. The solitaire is certified by IGI, one...
From £49.63 per month
Item Ref: UT26-55XUS.I.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
You can be proud to pop the question and express your love with this breathtakingly beautiful Elysia Platinum engagement ring. The sparkle of the striking 0.33CT G/VS Quality Diamond radiates from the beautiful Platinum band which adds to the dazzle...
From £35.5 per month
Item Ref: UT50-72GXU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you propose, she will cherish this ultra-elegant and luxurious 1.10CT halo ring with its pristine platinum setting, that's encrusted with dazzling sidetones. The solitaire is quality certified at G/VS1, the most esteemed gemmological experts in the world. Centre Stone:...
From £83.27 per month
Item Ref: UT56-92GXU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Show-stopping sparkle and contemporary elegance describe this round brilliant solitaire engagement ring in platinum. The centre stone is certified at G/VS2 grade by GIA, the world's most authoritative diamond quality experts. With a total of 1.15CT diamond weight, this is...
From £117.73 per month
Item Ref: UT27-72GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The simple design and natural beauty of the Grace Platinum engagement ring is sure to delight the special person in your life and give the perfect heart warming glow when you place it on their finger. This exquisite ring features...
From £65.58 per month
Item Ref: UT50-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you propose, she will cherish this ultra-elegant and luxurious 1.10CT halo ring with its pristine platinum setting, that's encrusted with dazzling sidestones. The solitaire is quality certified at G/SI2 grade by GIA, the most esteemed gemmological experts in the...
From £61.2 per month
Item Ref: UT57-92GXU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exceptionally elegant 0.88CT engagement ring combines a beautiful claw set solitaire, with dazzling sidestones in a sleek platinum channel setting. The G/VS1 solitaire is independently certified by GIA, the foremost authority in diamond quality grading. A sure way to...
From £137.58 per month
Item Ref: NDUT74-372XU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A spectacular certified Reina Engagement Ring in Platinum. 2.30CT 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 chemically and optically identical...
From £70.62 per month
Item Ref: UT24-72GXU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This elegant ring features a 0.50CT E/VS1 Quality Diamond which is held in a four claw twist design to truly highlight the beauty of the diamond. The sparkling diamond and unique claw design are made complete by the Platinum band...
From £86.3 per month
Item Ref: UT72-92IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This stunningly sparkling diamond halo ring features an exceptional round cut solitaire, independently graded by GIA. It looks simply stunning on the hand with a dazzling halo that features diamonds encrusted both on top of the setting, as well as...
From £89.46 per month
Item Ref: UT27-72IU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The simple design and natural beauty of the Grace Platinum engagement ring is sure to delight the special person in your life and give the perfect heart warming glow when you place it on their finger. This exquisite ring features...
From £55.15 per month
Item Ref: UT26-72GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
If you're looking for an elegant ring which will stand the test of time then the simply stunning Elysia Platinum engagement ring would be an ideal choice as it's a true classic. The ring features a 0.50CT G/VS Quality Diamond...
From £65.58 per month
Item Ref: UT27-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The simple design and natural beauty of the Grace Platinum engagement ring is sure to delight the special person in your life and give the perfect heart warming glow when you place it on their finger. This exquisite ring features...
From £57.16 per month
Item Ref: UT27-92IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A delicately beautiful ring, the Grace Platinum engagement ring would be an excellent choice for anyone who loves classic beauty in their jewellery collection. This ring features a glistening 0.70CT G/SI2 Quality Diamond which is held securely in a four...
From £90.47 per month
Item Ref: UT24-55XUS.U.5
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This elegant ring features a 0.33CT F-G/VS Quality Diamond which is held in a four claw twist design to truly highlight the beauty of the diamond. The sparkling diamond and unique claw design are made complete by the Platinum band...
From £35.5 per month
Item Ref: NDUT74-422XU3S
AVAILABILITY: In stock (2 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This magnificent sustainable diamond ring is a beautiful symbol of your love. It showcases a radiant 2 carat IGI-certified lab grown solitaire within a diamond halo. A highly polished band gives more surface area for diamonds and leads the eye...
From £85.76 per month
Item Ref: NDFT23-322XUS
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The exquisite round cut diamonds in this exceptional trilogy ring form a timeless and sparkling design to celebrate your love. The H/Si quality lab grown diamonds are complemented by a lustrous platinum band for a look and feel that's utterly...
From £62.21 per month
Item Ref: UT77-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A luxurious classic, this beautiful diamond double-halo ring is a perfect symbol of your love. It boasts an exquisite solitaire certified by GIA and a stunning split shank setting that divides to to support the magnificent centre diamond. Handcrafted in...
From £66.11 per month
Item Ref: UT56-72IU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This sumptuous solitaire with diamond shoulders will make her feel very luxurious and special on the day of your proposal. Beautifully handcrafted with a total of 0.91CT diamonds, the setting is made of heirloom quality platinum. The superlative round brilliant...
From £94.17 per month
Item Ref: UT57-92IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exceptionally elegant 0.88CT engagement ring combines a beautiful claw set solitaire, with dazzling sidestones in a sleek platinum channel setting. The G/SI2 solitaire is independently certified by GIA, the foremost authority in diamond quality grading. A sure way to...
From £104.27 per month
Item Ref: UT27-322IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
With this exquisite ring you can be confident that your loved one will be delighted when you propose. The simply stunning Grace Platinum ring combines the natural beauty of diamonds and Platinum and the 1.00CT G/SI2 Quality Diamond which is...
From £159.45 per month
Item Ref: SDN3228.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A stunning bridal set comprising of an engagement ring with a 0.25ct centre diamond with further diamonds on the shoulders and a separate diamond set wedding ring. Both rings are set into platinum and are the perfect fit for each...
From £84.08 per month
Item Ref: S3472.J.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Get the look of a much larger diamond with the Galileo diamond setting. Using a clever method of setting smaller diamonds to perfectly fit, we are able to create the illusion of a single diamond, in this case a 1.50ct...
From £99.56 per month
Item Ref: NDUT347-322HXU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Discover the Adore 1.50ct Round Cut Lab Diamond 3 Stone Engagement Ring in Platinum. A timeless round brilliant centre meets contemporary design in this elegant trilogy ring. Featuring a 1.00ct round lab-grown diamond and two 0.25ct pear-shaped sides, each F/VS1...
From £65.58 per month
Item Ref: UT73-72IU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
With exquisite elegance, this luxurious halo ring with sidestones is an heirloom piece she'll fall head over heels in love with. Handcrafted in the finest platinum, the solitaire is round cut, but surrounded by a cushion shaped halo for an...
From £76.68 per month
Item Ref: UT24-72IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This elegant ring features a 0.50CT G/SI2 Quality Diamond which is held in a four claw twist design to truly highlight the beauty of the diamond. The sparkling diamond and unique claw design are made complete by the platinum band...
From £57.16 per month
Yes, we offer returns on engagement rings within our standard return period. This gives you peace of mind if the ring isn’t quite right. For full details, please see our returns policy (https://www.thediamondstore.co.uk/policies/refund-policy) or contact our customer service team (https://www.thediamondstore.co.uk/pages/contact-us).
The best metal depends on your style and lifestyle. Platinum engagement rings are durable and naturally white, making them ideal for everyday wear. 18K white gold offers a bright, modern look, while 18K yellow gold provides timeless warmth. All of our metals are recycled and chosen for both beauty and strength.
Don’t worry - it’s very common not to know your partner’s size when planning a surprise proposal. You can secretly measure a ring they already wear or ask a close friend or family member for help. Many of our engagement rings can also be resized later, and we allow you to take advantage of our generous return and exchange policy, too.
Yes, many of our engagement ring designs have matching wed-fit wedding bands available. These are crafted to sit perfectly alongside your engagement ring, creating a seamless bridal set. Our collection includes plain, pavé-set, and shaped bands to suit your chosen design.
Every engagement ring over a certain carat weight comes with a certified diamond, graded for the Four Cs – cut, colour, clarity, and carat weight. We also provide IGI or GIA certification for many designs, giving you full assurance of quality and authenticity.
In many cases, yes. Most classic engagement ring designs can be resized, though certain eternity bands or intricate styles may not allow it.
When you return your ring to us, if resizing isn’t possible, we’ll issue a replacement ring in your desired size instead. This is the best approach for the majority of orders.
If you would prefer your original ring to be resized, usually for sentimental reasons, please let our Customer Service team know when you get in touch. We’ll do everything we can to see if this can be arranged and will keep you informed throughout the process.
We don’t currently offer bespoke or custom-made rings. However, our collection includes a wide variety of engagement, eternity, and wedding rings in different styles, metals, and precious stone shapes and colours — giving you plenty of choice to find a design that feels personal and unique to your story.
Delivery times depend on the design and sometimes size of the ring. Many of our diamond rings in standard sizes are available for fast or even next-day delivery. Estimated delivery times are available on the product pages, but you can always reach out to our customer services if you’d like to know the lead time on a specific item.
Yes, every ring comes in a luxury presentation box, perfect for gifting or marking life’s special moments.
We offer both lab-grown and ethically sourced natural mined diamonds, so you can choose the option that best suits your budget and values. All natural diamonds are sourced in line with the Kimberley Process to ensure they’re conflict free, and all our stones are set in recycled precious metals.
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.
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.
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.
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.
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.
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.
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.
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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