Hematoid Quartz Copper 10mm Round - 15-16 Inch Gray Australian Green Opal is a

Australian Green Opal is a variety of Common Opal which is a mixture of Opal and nontronite

This turquoise is mined from the Sonora mines in Mexico

It is mined under extremely harsh conditions and the high-grade specimens are more rare than diamonds

blue or gray

Natural topaz colors include rare and valuable yellow

Hematoid Quartz Copper 10mm Round - 15-16 Inch Gray Australian Green Opal is aHematoid Quartz is Quartz with inclusions of hematite. The hematite inclusions are responsible for the stones color, which can be yellow, orange, golden brown and red. Quartz has been highly valued by virtually every civilization throughout history, often used in healing and meditation and as religious objects in funerary rites and to dispel evil.