Magical Natural Solid Australian BLACK Opal Ring.

Round cut natural black opal. Stone has colors of blue, green, yellow, and orange/pink in a mosaic pattern with blocks of color set closely together.
 
This is a very lively stone, in the "fine" category of black opal.
Weight is 2.25 cts.
Dimensions are 12.5 mm wide x 2.6 mm deep.-

Mounted in solid 18k Yellow gold in a simple and charming Florentine design.
 
Specifications:
 
Weight: 8.3 grams
 
Stones: Round 2.25ct natural solid Australian black opal gemstone measuring 12.5 mm wide x 2.6 mm deep.
 
Size & Measurements: The ring is a Size 10.5 (US) . Can be resized. 
 
Metal & Hallmark: 18 karat solid yellow gold (ring) - Ring hallmarked 750 (18k).