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: NDUT73-AF322S
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 yellow lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £52.99 per month
Item Ref: UT50-92GXU4S.F.0
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/VS2 grade from...
From £125.47 per month
Item Ref: UT57-92GXU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite diamond engagement ring showcases a radiant solitaire that's certified at G/VS2 quality by GIA, the world's principal gemmological authority. The lustrous platinum band is channel set with dazzling sidestone diamonds that draw the focus to the centre stone....
From £117.73 per month
Item Ref: UT56-322IU3S.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 1.50CT diamonds, the setting is made of heirloom quality platinum. The superlative round brilliant...
From £249.15 per month
Item Ref: UT74-322IU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This magnificent halo diamond ring showcases a superb round cut solitaire certified by GIA. A beautiful diamond-embellished band holds the centre setting securely. Handcrafted in heirloom platinum that offers a luxurious look and feel upon the hand. 1ct Centre Stone
From £166.51 per month
Item Ref: UT73-12IU4S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Watch the delight on her face when you propose to her with this breathtaking diamond engagement ring. In the centre, it features a round brilliant cut solitaire certified by GIA. Surrounding it is a beautiful cushion-shaped diamond halo, and glistening...
From £152.72 per month
Item Ref: UT24-92GXU4S.I.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The delicate beauty of the Lily platinum engagement ring is breathtaking. This elegant ring features a 0.70CT G/VS Quality Diamond which glistens against the platinum band to stunning effect. The Lily engagement ring is pure understated elegance. Certificate Information: Official...
From £88.45 per month
Item Ref: NDUT25-55JUS.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
When you propose you can be confident that this stunning ring will rise to the occasion. The exceptional lab created diamond solitaire in H/Si quality ensures showstopping sparkle. It is set on a luxurious, handcrafted platinum band for lasting heirloom...
From £21.84 per month
Item Ref: NDFT23-97JUS.J.5
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The handcrafted elegance of this exquisite ring ensures the three H/Si lab grown diamonds sparkle at their brightest against the beautiful platinum band. With exceptional quality and beauty, this trilogy ring makes an impressive gift she'll cherish forever. 1.00ct version...
From £37.65 per month
Item Ref: UT77-322XU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Captivating and undeniably luxurious, this exquisitely sparkling diamond ring features a GIA-certified, round cut solitaire encircled by a radiant double halo of smaller diamonds. The split shank band, which divides into two to draw the eye to the centre setting,...
From £214.63 per month
Item Ref: UT73-12IU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This breathtaking diamond ring would be the ideal choice for anyone who loves classic jewellery with an abundance of luxury. Taking centre stage is a round cut, GIA-certified solitaire. Smaller accent diamonds sparkle all over, forming a cushion-shaped halo around...
From £144.64 per month
Item Ref: UT59-322GXU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This brilliant 1.58CT Carly diamond halo ring features an alluring centre stone certified at G/VS1 quality by GIA, the world's most trusted diamond experts. The halo and split shank setting studded with diamonds draw the eye to the solitaire. Handcrafted...
From £314.55 per month
Item Ref: UT58-72GXU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite ring sparkles with a stunning infinity swirl design and luxurious sidetones. The round brilliant cut G/VS2 solitaire comes with an independent diamond report from GIA, the world's leading gemmological authority. With total 0.82CT diamonds and an opulent platinum...
From £61.2 per month
Item Ref: UT56-322GXU4S.F.0
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 £256.68 per month
Item Ref: UT77-92IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The sheer brilliance of this luxurious diamond ring is sure to catch the eye wherever you go. Extravagant yet sophisticated, its GIA-certified solitaire is round cut for exceptional sparkle and fire. The split shank band, which divides into two to...
From £87.45 per month
Item Ref: UT59-322IU4S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This stunning 1.58CT diamond halo ring features a superb solitaire certified at G/SI2 quality by GIA, the world's most trusted diamond quality authority. The halo and split shank setting studded with diamonds draw the eye to the centre stone. Handcrafted...
From £164.83 per month
Item Ref: UT26-12GXU4S.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 0.90CT G/VS Quality Diamond which glistens and sparkles against the Platinum band. This ring is understated beauty at its...
From £171.76 per month
Item Ref: NDUT74-RF72S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite Reina 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 £42.02 per month
Item Ref: NDUT347-722HXU3S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Discover the Adore 6.00ct 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 5.00ct round lab-grown diamond and two 0.50ct pear-shaped sides, each F/VS1...
From £123.78 per month
Item Ref: UT58-322GXU3S.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 £314.55 per month
Item Ref: NDUT73-RF322S.L.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 £50.1 per month
Item Ref: NDUT56-RF72S.O.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 pink lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £35.83 per month
Item Ref: NDUT56-RF322S.O.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 pink lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £50.1 per month
Item Ref: NDUT73-AF72S.K.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 yellow lab diamond solitaire looks elegant in a platinum setting, catching the eye with its unrivalled brilliance....
From £37.31 per month
Item Ref: UT77-92XU4S.K.0
AVAILABILITY: In stock (1 item)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
The sheer brilliance of this luxurious diamond ring is sure to catch the eye wherever you go. Extravagant yet sophisticated, its GIA-certified solitaire is round cut for exceptional sparkle and fire. The split shank band, which divides into two to...
From £118.74 per month
Item Ref: UT75-322XU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This handcrafted diamond engagement ring features a radiant, GIA-certified round brilliant cut solitaire. It is showcased to perfection by a highly polished platinum setting and baguette cut sidestones. The result is an exceptional, sophisticated engagement ring designed to rise to...
From £262.4 per month
Item Ref: UT57-12GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite diamond engagement ring showcases a radiant solitaire that's certified at G/VS2 quality by GIA, the world's principal gemmological authority. The lustrous platinum band is channel set with dazzling sidestone diamonds that draw the focus to the centre stone....
From £191.75 per month
Item Ref: UT57-72GXU3S.F.0
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/VS1 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 £81.73 per month
Item Ref: UT20-322IU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
You can be confident when you propose with this exquisite Leah Platinum engagement ring in your pocket. See her face light up when you present this uniquely designed ring which features a Platinum band and the breathtaking sparkle of a...
From £163.01 per month
Item Ref: NDUT56-AF72S.L.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 £35.97 per month
Item Ref: UT50-322GXU4S.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 1.70CT diamonds in the finest platinum. The solitaire comes with a diamond report at G/VS2 grade from...
From £243.9 per month
Item Ref: UT58-322GXU4S
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
This exquisite ring sparkles with a stunning infinity swirl design and luxurious sidetones. The round brilliant cut G/VS2 solitaire comes with an independent diamond report from GIA, the world's leading gemmological authority. With total 1.38CT diamonds and an opulent platinum...
From £256.68 per month
Item Ref: UT20-322GXU3S.F.0
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
You can be confident when you propose with this exquisite Leah Platinum engagement ring in your pocket. See her face light up when you present this uniquely designed ring which features an Platinum band and the breathtaking sparkle of a...
From £114.7 per month
Item Ref: UT77-72XU3S.F.5
AVAILABILITY: In stock (0 items)
PRODUCT TYPE: Rings
VENDOR: The Diamond Store
Displaying beautiful fire and sparkle, this exceptional diamond ring showcases a GIA-certified round solitaire in a double halo of smaller diamonds. Balancing and supporting the magnificent size of the centre setting is a diamond-studded split shank band that divides into...
From £93.17 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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