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Platinum Diamond Trilogy Ring

free engraving

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Platinum Diamond Trilogy Ring

Quick Overview

*Now available to buy online with free delivery!

Platinum and Diamond Trilogy Engagement Ring, Size M (prices may vary to order in a different size)

Past, Present and Future

Diamond contect: 0.66ct (total) GIA Certificate Available

The diamonds are GIA graded at colour G/H (near colourless) and have a Slightly Included clarity grading. All Brown & Newirth diamonds have an excellent/ good cut grade. This style is also available in 9ct & 18ct White, Yellow and Rose Gold and Platinum.

Together with Brown & Newirth we offer:

Lifetime Guarantee on all rings
Complimentary Engraving
Three free re-finishes on any ring
One free resize

Finance options are available in store.


Out of stock


Unfortunately we cannot accept returned items that have been engraved.

Reasons to shop
with us...

  • Feefo

    Excellent customer service, see independant reviews on feefo

  • Free Gift Wrap

    Free beautiful gift wrapping and message tag on all orders

  • Free Delivery

    Free delivery on all orders

Diamond Room

Visit our Diamond Room to view the full range of engagement jewellery

We’ll give you some friendly advice and a free consultation

Book Your Visit

Platinum Diamond Trilogy Ring


Housed in Silver Tree Jewellery, “The Diamond Room” features stunning collections of engagement rings, wedding bands, eternity rings and diamond set jewellery, where we give customers a unique setting in which to choose their extra special purchase. Brown & Newirth has become one of the world’s most treasured makers of fine jewellery ‘for the most important moments in your life'. Their British heritage grew from 1967 when Eddie Brown, the son of a jeweller, moved from New York to London with a vision of hand-crafting wedding rings to suit every finger shape and style. He teamed up with Isadore ‘Izzy’ Newirth, a friend and businessman, and Brown & Newirth® was born.   

All diamonds in the Diamond Room also conform to the Kimberley Process, guaranteeing they are only sourced from conflict-free zones.

Please contact us by email or phone on 01524 847100 for more information or to make an appointment.

Additional Information

BrandBrown & Newirth

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Our no rush delivery rate is £3.50 and FREE for all other orders over £30 (2-3 days), our express delivery rate is £5.00 and FREE for all orders over £70 (1-2 days) and our Saturday guaranteed delivery rate is £9.00 (please order by 3pm Friday).

Our EU shipping rate £10.00 and FREE for all orders over £120.00.

Our international shipping rate £15.00 and FREE for all orders over £150.00.


we are able to offer you a full refund provided the item is returned to us within 14 days provided it is returned in it's original condition. We can offer to exchange an item provided the item is returned to us within 30 days provided it is returned in it's original condition. Unfortunately we cannot accept returned earrings for hygiene reasons or items which have been engraved.

For more information on international deliveries and our returns poilcy please visit our FAQ's page.

Request a Visit

Contact our Diamond Room experts on:

Tel: 01524 847100


Express Delivery
Diamond Room