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James Moore & Co.

James Moore & Co 3ct Round Brilliant Lab Grown Diamond Platinum Solitaire Ring

J49750

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In addition to our 30 day returns policy, all items purchased from 1st October 2026 can now be returned until 15th January 2027, terms apply.
In stock - International Delivery Click here for full delivery details
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Product Description

James Moore & Co is a fine jewellery name focused on timeless pieces crafted from precious metals and carefully selected stones. The brand's collections centre on classic designs intended for life's most meaningful moments, from engagements to anniversaries. This 3ct round brilliant lab grown diamond solitaire in platinum reflects that philosophy, pairing a single striking stone with an enduring, refined setting built to be treasured.

Make a statement that lasts a lifetime with this 3ct Round Brilliant Lab Grown Diamond Platinum Solitaire Ring from James Moore & Co. Designed as an engagement ring of true distinction, it showcases a substantial 3ct lab grown diamond in the round brilliant cut, a shape celebrated for its exceptional brilliance and fire. Presented in a classic solitaire setting, the centre stone takes full prominence, allowing light to move freely through the diamond and display its sparkle from every angle.

The band and setting are crafted in platinum, a naturally white, dense and highly durable precious metal favoured in luxury fine jewellery for its enduring beauty and suitability for everyday wear. Its cool white tone complements the diamond, enhancing its bright, icy appearance. Sized to order for a personal fit, this ring is an ideal choice for a proposal, and equally fitting as an anniversary gift or a meaningful present for a partner, wife, mother, daughter or sister. Supplied in new condition, it represents a considered investment in high craftsmanship and timeless design that will be cherished for years to come.

  • Features a substantial 3ct lab grown diamond as the centrepiece of the design.
  • The round brilliant cut is engineered to maximise brilliance, fire and sparkle.
  • A classic solitaire setting gives the centre stone full prominence and allows light to enter freely.
  • Crafted in platinum, a durable, naturally white precious metal ideal for everyday wear.
  • Sized to order to ensure a comfortable, personalised fit.
  • An elegant engagement ring that also suits anniversaries and romantic occasions.
  • Supplied in new condition as a piece of fine jewellery from James Moore & Co.
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Product Specifications
Gift For / Occasion
Sister, Partner & Wife, Mum & Grandmother, Daughter & Niece, Aunt, Anniversary & Romance
Gender
Women's Jewellery
Fine/Fashion
Fine Jewellery
Ring Size
Sized to order
Type
Ring
Setting
Solitaire
Style
Engagement
Precious Stones
Lab Grown Diamond
Material
Platinum
Stone Cut
Round Brilliant Cut
Diamond Weight
3.00ct - 4.99ct
Condition
New
Delivery & Returns
Free delivery is available on all UK orders -
For items listed as in stock, your order should be completed before 4:00pm (Monday-Friday) for us to despatch the same day or before 11:30am on Saturday for delivery Monday. Please note that all orders must pass our security policy before they are despatched and we must be able to take payment successfully, if this is not possible we will email or send an SMS with further instructions. For queries and delivery questions please feel free to call us on +441926 298499 (English only).
For other items, a delivery estimate will be shown where possible. It is an estimate only - supply is in the brand's control and the timescale cannot be guaranteed. If we feel we are unable to adhere to the timescale after you place your order we will contact you to make you aware and allow you to change your order if necessary. Items will be sent by your chosen delivery method once they are back in stock. For UK orders paid by card, Apple Pay or Google Pay we do not charge you until we are about to despatch your order; PayPal, Amazon Pay, Klarna, finance and international orders are charged when the order is placed.
Returns Policy

In addition to our 30 day returns policy, all items purchased from 1st October 2026 can now be returned until 15th January 2027, terms apply.

We aim for you to be absolutely delighted with your purchase and therefore offer you 30 days to change your mind on your purchase. You may do this by using the form provided with your order or otherwise. We will provide a refund of all payment received (not including delivery upgrades), usually within 2 working days of receiving your return (it may take a little longer during busy periods or for more complex returns). This will be made to the original payment method. For most payment methods it will take 3-5 working days for this to show on your statement.

Please ensure items from your order are suitable before wearing as we are unable to accept items which have been worn under our returns policy.

Returns are free on all UK orders. For orders under £500, you may generate a free tracked and insured returns label on the Royal Mail website (opens in a new window). You can print this label and send it back at any local Post Office at no cost to yourself. It is also possible to have the label printed at Post Office using the QR code from the confirmation email. Please retain the proof of postage receipt. Unfortunately we are unable to refund return postage for orders under £500 sent back by other methods, so we recommend printing the free postage label provided. For orders from £500 to £2,500, the Royal Mail label does not cover the value of the item, so please send it back by Royal Mail Special Delivery, insured for its full value, and we will reimburse the postage separately (please keep your proof of postage — full details are on your receipt), or contact us and we can arrange a collection. For orders over £2,500, please contact us and we will arrange the return for you. For international returns, you will need to bear the cost of returns postage. Please ensure the watch is returned to us in an unworn, new condition with all the original packaging (manufacturer's manual and guarantee if applicable). Please ensure items from your order are suitable before wearing as we are unable to accept items which have been worn under our returns policy. We reserve the right to make deductions for unnecessary damage caused to the product by yourself.

For UK orders we are also able to offer an exchange to a different product if required, please specify this when returning your product. For international orders, please return the item for a refund and place a new order for the product you would like.

If a fault develops with a watch that is outside of the 30 day returns period or is no longer in a new condition the watch can be returned to the manufacturer under the terms of the guarantee (we are an official UK dealer for all brands on our website) so that they can rectify any issues. For more information please see our returns policy page.

Authorised Retailer
First Class Watches SGP are James Moore & Co. watch retail partners so you can be assured your sparkling new watch will arrive with a stamped manufacturer's warranty, packaging and instructions.
This item is supplied with:
  • Official James Moore & Co. guarantee
    fully stamped (where appropriate)
  • Instruction manual
    Please note some brands use online manuals
  • Official Packaging
    Official James Moore & Co. packaging
Please note: Outside of the UK, the duration of the manufacturer's guarantee may be different and therefore you may need to return your watch to First Class Watches in order to get the full guarantee.

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