Vintage Mexican precious opal, a well polished cabochon of 3.22 carats and dimensions 11 x 9 mm.
OPAL is found all over the world. It is made of silica (silicon oxide) like quartz, but has water in its structure as well. Opal can be opaque to nearly transparent (crystal opal), almost any color, including white and black, and sometimes displays rainbow colors ("fire")in myriad patterns (precious opal). Opal that does not contain fire is called common opal. Precious opal has been prized for centuries as a valuable gemstone. Opal is the birthstone for October.
The opal shown is vintage material and displays delicate streaks of green fire within a translucent clear hotsell (slightly yellowish) body. There is no visible crazing. The polish is excellent and this gem would make a lovely focal item in a piece of fine jewelry.
*********The price is for the one cabochon, and the shipping cost includes insurance.*********
Product code: Vintage Mexican OPAL loose oval gem 3.22 hotsell cts cab38