Art Deco 18ct Gold Diamond trilogy engagement ring

Art Deco 18ct Gold Diamond trilogy engagement ring

Circa 1920s - this gorgeous ring features three, old European-cut diamonds mounted flush in a low profile platinum crown setting, and finishing with a slim but strong 18ct yellow gold shank. Interestingly, the inside of the shank has been previously engraved with initials and the date '19/7/25'. We think this was likely to be the date of a wedding proposal, or possibly a wedding day!

The central diamond measures 4.3mm and is flanked by two, 3.7mm diamonds with an estimated colour H and a clarity of SI1 / SI2, with a total carat weight of 0.70ct. Full of character and fire, the diamonds exhibit a captivating sparkle in that way that only old-cuts do! 

Please note that there is a tiny hairline crack on the surface of one of the outer diamonds (seen in close-up images). It is only visible through a jeweller's loupe and is not noticeable when worn. This has been reflected in the price.

A stunning example of an engagement ring from a bygone era, the 3 diamonds representing 'I-Love-You' or 'Past, Present & Future'.


Measurements: 13.5mm x 5mm (head of ring), 1.7mm (width of shank).

Hallmarks: 18ct & fine plat (platinum)

Weight: 2.4 grams

Ring Size: UK Q, US 8 (Sizing available on request)

Condition: very good except for crack (see description above)

Date: Art Deco (1920 - 1935)

Product Code: RG1403

We can provide resizing of this ring (depending on the size needed). Please send your request via our contact form or email us directly with your enquiry. 


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Any antique boxes shown in product images are for display purposes only. Unless otherwise stated, the item will be sent in our own branded leatherette and velvet box. All items are antique, vintage, and/or pre-loved and will naturally have signs of wear and tear commensurate with age. Please note that images have been enlarged to show detail. All measurements are listed in the item description.