Australian Coober Pedy black Opal in a handmade 14K 'Byzantine Crown' setting. This opal has a red pinfire pattern.  More than 50% of the fire in this Opal is red with all the colors of the rainbow. 

Gemstone:

Black Opal
Weight: 5.15 carats (approx.)
Cut: Oval Cabochon
Size (L x W x D): 16.5 x 12.5 x 3.5mm
Origin: Australia
Color: Gray with a red pinfire pattern

Setting:

Metal: 14K solid Yellow Gold
Handmade
Ring Size: 5.75 (easily sizable for free)