Ring in 585 thousandths rose gold and 800 thousandths silver, oval bezel centered with an old-cut diamond on an oval bezel adorned with turquoise enamel (minor bumps) on a guilloché and radiating background, set with twelve old-cut diamonds. Late 18th century. Total estimated diamond weight: 0.65 ct Finger: 50 - Gross weight: 4.9 g