Art Deco Diamond Trilogy Ring
A dainty Art Deco trilogy ring set with three transitional cut diamonds. The stones are graduated, the centre larger than the two flanking stones, and they're set in platinum prong mounts with an 18ct yellow gold band. The three-stone, aka trilogy ring, gained popularity during the early 20th century when the concept of an "engagement ring" became more mainstream. The three stones are said to represent the past, present, and future respectively.
Era: Art Deco, circa 1930
Stones: Transitional Cut Diamonds
Ring size: P 1/2 or 7.5 US. Resize for £55.
Head: 9.8mm by 4.1mm
Marks: Stamped 18ct
Condition: Great antique condition
Full appraisal document provided with each item
This includes a valuation for insurance purposes, item specifics, date, and origins (where applicable)
Gemstones are tested by an accredited gemmologist (Cert GA, Gemmological Association of Great Britain)
Shipping
DHL Express shipping is free of charge on international orders over £300 and it's carbon offset
Tracked and insured with signature on delivery
RM Special Delivery (UK domestic)
US Shipments
US Customs no longer charges a 10% tariff on antiques shipped from the UK. We will ensure that our parcels are correctly declared using the relevant HTS codes to qualify for the tariff exemption and zero-rated (0%) duties so you won't have any customs fees to pay at the border. You will remain liable for any handling/storage fees charged by DHL as a result of a delay in providing any additional customs information.
[Last updated: September 2026]
Resizing
Ring sizing is available on most rings
£55 flat fee
Resizing takes 7-14 days
Leave a note at checkout with your desired size
Note: sizing may remove some of the patina (although we take every care to reduce this where possible)
Layaway
25% deposit taken to secure the item. The remaining balance will be settled in 90 days. You can pay installments weekly, monthly, or the full balance at the end - whatever works.
Condition
We offer detailed and accurate condition reports on each listing. These pieces are antique, vintage, or pre-loved and often over 100 years old so they're going to have lived a life. A healthy patina and the odd scuff or scrape is quite normal... it's part of their charm! Everything we present has been checked over by our jeweller and should be good for wear for many years to come (unless otherwise stated) but please remember to treat them with appropriate care and consideration for their age.
Buying a Gift?
Leave a note at checkout and we'll include a handwritten note to the recipient. Just tell us what you'd like to say :)
More Questions?
Get in touch... There's a live chat at the bottom right of the page.
info@lostowl.com
An inscription can be added inside the band, where space allows. Add 3-6 weeks to shipping times Add a note in the cart* with your desired size and/or inscription
*the shopping cart, not checkout