Antique Art Deco sapphire and diamond trilogy ring 18 carat gold and platinum

Era: Early 20th century C.1915-1920
Metal: 18ct Gold and platinum, stamped '18ct & plat'
Gemstones: old cut diamonds x2 3.5mm each, blue sapphire 3.8mm
Size: UK L.75/US 6/EU 51.25
Weight: 2.6g
 
An early 20th century trilogy ring, set with two old cut diamonds, totalling approx. 0.15 carats each and a central saturated mid blue sapphire of approx 0.20 carats.
 
In very good antique condition, the shank is substantial and the whole ring shows very little wear. A lovely piece!