Top Koroit Boulder Opal 15.23 ct Double Sided

Top Koroit Boulder Opal 15.23 ct, double sided.  This beautiful Unheated Gemstone shows an amazing pattern, this stones has a perfect hig lgoss polished on both sides. It is perfect for jewellery. Every Opal piece is Unique.

WEIGHT : 15.23 ct
SIZE : 21.24 * 14.48 * 6.37 mm
SHAPE : Cab. Oval
CLARITY GRADE : Opaque
TREATMENT : Untreated
HARDNESS : 5.5 - 6.5

The Opal is associated with good luck, it is the birthstone for October and the gem fo 14th wedding anniversaries.

The name for the opal comes from the Sanskrit word "Upala", meaning precious stone or stone par excellence. The Greek word "opallios" means "to see a change of colors".