Natural Cumpas Turquoise
Rough
Turquoise is a copper-based mineral (hydrated copper aluminum phosphate).
Turquoise polishes well with diamond, tin oxide or green rouge.
Natural
Cumpas Turquoise Rough - Fine Blue Color, Medium-Large Size
Locality: Cumpas, Sonora, Mexico
This material is a fine light blue with little to no brown matrix and some
"waterwebbing"; a white version of spiderwebbing.
Cabochon cut from this material.
Fine Blue Natural Cumpas Turquoise from Sonora, Mexico