Fine Imperial Green Jadeite Cabochon Mounted In A Platinum Diamond And Ruby Lady's Ring. The Large Cabochon Is Approximately 20mm x 14mm x 4-5mm. Fine Translucency And Life. The Platinum Mounting Set With Two Gem Square Cut Rubies On Either Side Of The Center Stone Surrounded By 18 Round Brilliant Near Colorless Diamonds. Ring Size 7 1/2. Stamped Platinum And Maker Mark. The Jadeite Cabochon Is Guaranteed To Be Natural Color And Not Enhanced - Type "A" Material. Circa 1920-1940.