Opal Cabochons - Height: 55 mm - Width: 37 mm- 22 g - (1)

Cabochon mounted on a Koroit Boulder Opal chain from Queensland.
Weight: 22 grams.
The stone measures 55 x 37 x 5 mm.

Koroit opals belong to the Boulder opal family and are extremely rare. They formed through silica-rich water deposits that became trapped within iron minerals called Matrix.
Koroit opals are highly sought after for their intricate patterns where the colors of the earth and crystals blend into wonderful structures that have inspired Aboriginal art since prehistoric times, which is why they are often referred to as "tribal patterns".
Australian Boulder opals are a gemstone that increases in value over time and will add prestige to your collection.