The cameo itself has similar tones

Marks: "9Ct D" Stamped on the reverse

Marks: "10K N" Stamped on the inside band

Lots of geometric lines are in play here

Rare Cat's Eye Spectrolite and Green Gold Retro Era Cocktail Ring Art Deco with Diamonds The cameo itself has similarThis outstanding 1940's mounting holds a rare gem, a cat's eye spectrolite with great play of light!. This particular ring stands out to thanks to the platinum and diamond decorations of the shoulders on either side of the gem, typical of the 1940's time period. Metal: 14K Green Gold, Platinum Gem: Blue Spectrolite Cat's Eye 14. 70 Carats Gem Measurements: 13. 7 mm, Round Accents: 8 Diamonds . 20 Carat Ring Size: 5