The Chelsea Bijouterie Ltd has dated this piece to the 1920s.
The beautiful diamonds are peg & carree bezel set in a platinum illusion setting.
The centre stone is about 2.8 mm and the outside two are 1.5 mm.

The old brilliant cut diamonds appear much larger due to their illusion setting.
They are clear & bright and sparkle beautifully.Colour G/H, Clarity VSI
The ring has very attractive platinum shoulders with diamond detail & pretty millegrain edging.

This ring dates to the Art Deco period (1920's).
The size is size P 1/2 (UK), 8 (USA) it would easily re size.
It is stamped 18ct & PLAT. It weighs an impressive 3.4 grams.
The head is 4.6 mm x 11.5 mm across and it stands 5mm proud of the shank
This antique ring is in excellent condition.It comes in the presentation box illustrated.
This is such a pretty ring that looks gorgeous when worn.
The Chelsea Bijouterie Ltd has dated this piece to the 1920s.
You can view the stock and full dealer information on the The Chelsea Bijouterie Ltd Profile Page