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: UT23-92IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The stunning low set Chloe ring represents simple elegance at its best. The ring features a 0.70CT glistening G/SI2 Quality Diamond which takes centre stage and is held in a claw setting. The ring is complemented perfectly by the stunning...
From £72.64 per month
Item Ref: UT24-47XUS.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This elegant ring features a 0.25CT 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 £35.29 per month
Item Ref: NDUT347-422HXU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Discover the Adore 2.60ct 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 2.00ct round lab-grown diamond and two 0.30ct pear-shaped sides, each F/VS1...
From £88.45 per month
Item Ref: UT74-92IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Give her the proposal of her dreams with this exquisite diamond ring. It showcases a round cut, GIA-certified solitaire within a dazzling halo setting. Smaller diamonds also cover the band, which creates added overall sparkle. Handcrafted in platinum for a...
From £84.08 per month
Item Ref: UT73-72XU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Luxurious, classic and infinitely sparkling, this handcrafted diamond engagement ring is sure to impress. The ring features a stunning round cut solitaire taking centre stage, with smaller round diamonds forming a halo in a cushion shape around it. Adding to...
From £83.74 per month
Item Ref: UT57-72GXU4S.L.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This eye-catching 0.65CT diamond ring features a superb solitaire certified at G/VS2 grade by GIA, the foremost diamond quality authority, as well as dazzling sidetones in a sleek channel setting. The beautiful handcrafted platinum band gives this ring a substantial...
From £71.83 per month
Item Ref: UT23-92GXU4S
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 0.70CT G/VS Quality Diamond glistens from the centre...
From £107.63 per month
Item Ref: NDUT23-47UKS.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Mark your love with this exquisite diamond engagement ring. Nestled within a gleaming platinum setting and created in a precisely controlled lab environment using a fusion of art and technology, the lab grown diamond centre stone guaranteed conflict free and...
From £23.52 per month
Item Ref: UT56-12GXU3S
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/VS1 grade by GIA, the world's most authoritative diamond quality experts. With a total of 1.40CT diamond weight, this is...
From £190.07 per month
Item Ref: UT56-92GXU3S
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 £142.62 per month
Item Ref: UT24-72IU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This elegant ring features a 0.50CT G/SI1 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 £54.0 per month
Item Ref: UT24-72GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This elegant ring features a 0.50CT 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 £65.58 per month
Item Ref: NDUT40-IU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This stunning engagement ring features an exquisite lab created solitaire in a high H/Si quality to ensure beautiful sparkle on the hand. The band is flawlessly finished in channel set platinum and showcases even more diamonds to add extra luxury....
From £32.47 per month
Item Ref: NDUT49-HXU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This stunning engagement ring showcases the beauty of diamonds perfectly. It features an exquisite lab grown solitaire in a sparkling G/Vs quality. The handcrafted band is encrusted with lavish diamonds to create even more exquisite sparkle. A beautiful symbol of...
From £45.05 per month
Item Ref: NDUT47-IU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisitely sparkling engagement ring makes is a beautiful symbol of your love. The stunning 0.50CT lab grown solitaire is set on a band of the finest platinum that showcases more sparkling diamonds in a sleek channel setting. A ring...
From £34.62 per month
Item Ref: UT73-92IU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A sensational engagement ring with a cushion-shaped diamond halo, this unique handcrafted piece gives centre stage to a stunning GIA-certified solitaire. Smaller accent diamonds with exceptional sparkle add luxury to the halo and set upon the ring's band. Made with...
From £117.26 per month
Item Ref: UT26-92GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The glistening 0.70CT G/VS Quality Diamond in this handcrafted Elysia Platinum engagement ring will melt the heart of the special person in your life. The diamond is showcased elegantly and held securely in the claw setting and the Platinum band...
From £86.77 per month
Item Ref: UT23-322IU4S
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 £159.45 per month
Item Ref: NDUT25-47XUS.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This engagement ring showcases the beauty of white gold and diamonds perfectly. It features a 0.25CT lab created diamond in a white and sparkling H/Si quality. The radiant solitaire is set on a handcrafted 18K white gold band to create...
From £35.29 per month
Item Ref: UT50-92GXU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A luxurious classic, this beautiful 1.35CT diamond halo ring with sidetones is a perfect symbol of your love. It boasts an exquisite G/VS1 solitaire certified by GIA, the world's most highly respected diamond grading institution. Handcrafted in a sleek platinum...
From £145.18 per month
Item Ref: CFCO3
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
A glamorous certified Talia Engagement Ring in Platinum. Claw setting. 1.50CT of H/SI quality diamonds. Free UK delivery and a 5 year guarantee. 1.00CT Centre Diamond
From £291.2 per month
Item Ref: UT78-322XU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This ravishing diamond trilogy ring features a sparkling 1CT cushion cut diamond center stone, and two radiant white round diamonds on a handcrafted platinum band. A testament to timeless luxury, its exceptional elegance makes it the ultimate engagement ring to...
From £185.02 per month
Item Ref: UT76-72IU4S.J.0
AVAILABILITY: In stock (1 item)
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. The second row is angled outwards, encrusted on to the halo's edge. This...
From £59.72 per month
Item Ref: UT57-92IU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This eye-catching 0.88CT diamond ring features a superb solitaire certified at G/SI1 grade by GIA, the foremost diamond quality authority, as well as dazzling sidetones in a sleek channel setting. The beautiful handcrafted platinum band gives this ring a substantial...
From £109.65 per month
Item Ref: UT27-92IU3S.F.0
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/SI1 Quality Diamond which is held securely in a four...
From £92.02 per month
Item Ref: UT25-92GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This high set Chloe engagement ring is a lesson in simple elegance. The ring features a sparkling 0.70CT Colour G/VS Quality Diamond which is held securely in a claw setting and is surrounded by the complementary Platinum band. This engagement...
From £107.63 per month
Item Ref: UT23-12IU4S
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 0.90CT G/SI2 Quality Diamond glistens from the centre...
From £122.3 per month
Item Ref: UT57-322GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This eye-catching 1.20CT diamond ring features a superb solitaire certified at G/VS2 grade by GIA, the foremost diamond quality authority, as well as dazzling sidetones in a sleek channel setting. The beautiful handcrafted platinum band gives this ring a substantial...
From £257.36 per month
Item Ref: UT27-322GXU4S
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/VS Quality Diamond which is...
From £227.08 per month
Item Ref: UT25-72IU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This stunning high set Chloe Platinum engagement ring features a beautiful combination of glistening diamond and Platinum. The 0.50CT G/SI1 Quality Diamond takes centre stage and sparkles from the claw setting and the ring is perfectly finished with the gleam...
From £55.15 per month
Item Ref: UT25-322GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
An exquisite ring perfect for popping the big question with, this exceptional high set Chloe Platinum engagement ring glistens in the light and will make your loved one weak at the knees. The ring features a stunning 1.00CT G/VS Quality...
From £227.08 per month
Item Ref: NDUT73-422XU3S
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. Set in the finest platinum, the stunning 2-carat lab grown solitaire is round cut, yet surrounded by an elegant...
From £88.45 per month
Item Ref: NDUT50-422IXU3S.H.5
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you propose, she will cherish this ultra-elegant lab grown diamond halo ring with its heirloom platinum setting. The band is encrusted with dazzling sidestones for increased sparkle. The 2-carat solitaire is quality certified at by IGI, one of the...
From £64.23 per month
Item Ref: UT74-92XU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Give her the proposal of her dreams with this exquisite diamond ring. It showcases a round cut, GIA-certified solitaire within a dazzling halo setting. Smaller diamonds also cover the band, which creates added overall sparkle. Handcrafted in platinum for a...
From £145.18 per month
Item Ref: UT27-47XUS.J.0
AVAILABILITY: In stock (1 item)
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 0.25CT G/VS Quality Diamond which is held securely in a four...
From £32.27 per month
Item Ref: NDUT73-RF72S.T.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite Elizabeth ring is part of our new Elara Collection that showcases the breathtaking beauty of sustainable coloured lab diamonds. The magnificent pink lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £35.83 per month
Item Ref: UT73-92XU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This luxurious halo ring with sidestones is a high-quality piece she will cherish, and which you'll feel absolutely confident proposing with. The dazzling round cut solitaire in the centre is encircled with a halo of diamonds that has been crafted...
From £100.23 per month
Item Ref: UT25-72GXU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This stunning high set Chloe Platinum engagement ring features a beautiful combination of glistening diamond and Platinum. The 0.50CT G/VS Quality Diamond takes centre stage and sparkles from the claw setting and the ring is perfectly finished with the gleam...
From £64.9 per month
Item Ref: UT72-92XU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This glamorous solitaire ring is perfect for saying 'I love you'. The beautiful round cut solitaire comes with a GIA diamond certificate for absolute confidence when you propose. Adding breathtaking sparkle are two rows of diamonds, one in a halo...
From £145.18 per month
Item Ref: UT25-12GXU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This engagement ring showcases the beauty of Platinum and diamonds to stunning effect. The high set Chloe ring features a 0.90CT G/VS Quality Diamond which is held in the centre of the ring by a six claw setting. The glistening...
From £173.11 per month
Item Ref: NDUT24-55UKS.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Perfectly radiant in its everlasting beauty, celebrate your love with this mesmerizing diamond engagement ring. This superb quality lab grown diamond is rigorously hand selected and forged in a precisely controlled lab environment by expert scientists. Sustainable and a hundred...
From £24.19 per month
Item Ref: NDUT56-AF322S.M.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite Natalia ring is part of our new Elara Collection that showcases the breathtaking beauty of sustainable coloured lab diamonds. The magnificent yellow lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £51.44 per month
Item Ref: UT50-92IU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
With exquisite elegance, this luxurious halo ring with sidetones is an heirloom piece she'll cherish forever. Handcrafted, it's set with a total of 1.35CT diamonds in the finest platinum. The solitaire comes with a diamond report at G/SI1 grade from...
From £149.89 per month
Item Ref: UT26-47XUS.F.0
AVAILABILITY: In stock (0 items)
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 0.25CT G/VS Quality Diamond radiates from the beautiful Platinum band which adds to the dazzle...
From £35.29 per month
Item Ref: NDUT347-522HXU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Discover the Adore 3.80ct 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 3.00ct round lab-grown diamond and two 0.40ct pear-shaped sides, each F/VS1...
From £109.32 per month
Item Ref: UT58-72GXU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
An exceptionally luxurious engagement ring that she is sure to fall in love with, this beautiful infinity swirl design sparkles with a round brilliant cut diamond in G/VS1 quality, and shimmering sidestones. The solitaire is certified by GIA, the world's...
From £86.77 per month
Item Ref: NDUT56-DF322S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite Natalia ring is part of our new Elara Collection that showcases the breathtaking beauty of sustainable coloured lab diamonds. The magnificent blue lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £44.58 per month
Item Ref: UT50-12GXU4S.J.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you propose, she will cherish this ultra-elegant and luxurious 1.60CT halo ring with its pristine platinum setting, that's encrusted with dazzling sidetones. The solitaire is quality certified at G/VS2 grade by GIA, the most esteemed gemmological experts in the...
From £192.29 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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