C.1900-1910. A very chic black enamel ring with a turquoise cabochon surrounded by tiny rose cut diamonds. The ring has a gorgeous timeless design, and the combination of rich black and vivid blue makes a beautiful contrast. It is 15k gold. Overall the ring is in very good condition, besides a minor scuff mark in rear center. (shown in the 5th photo). 

N-S (center) : Approximately 11mm
US Size: 5 1/2  (resizable 1/4-1/2 down by placing golden beads at inner band)