Black Opal Australian, Faceted 4mm Round - 15-16 Inch Stone Type_Apatite Rainbow Obsidian is known as

Rainbow Obsidian is known as a grounding and protective stone

Gem Silica occurs in a vivid blue green color due to the presence of copper in the stone and is free of inclusions of other minerals

it is made up of volcanic glass

Princess Patricia of Connaught

including lazurite

Black Opal Australian, Faceted 4mm Round - 15-16 Inch Stone Type_Apatite Rainbow Obsidian is known asBlack Opal is a naturally occurring variety of precious opal mined in Australia. this opal variety is characterized by their dark base tone. It is mined under extremely harsh conditions and the high grade specimens are more rare than diamonds. Australian Aboriginal tribes referred to Black Opal as "Fire of the Desert."