Art Deco style, this vintage 14K yellow gold has 4.15ct oval shape Opal, they have confetti like pattern and fired, prong setting on the decorated top, which adrons with milgrain beads, fluted texture and scroll etched out. 

Gemstone: Oval Opal cabochon, 10.67 x 5.0; 5.41 x 3.7, combine weight approx. 4.15ct
Weight 19.2 grams.
Size Fit 6.5" to 6.7" wrist
Hallmark and tested for 14K

Retail $2,600