Cuprite 24x36mm Free Form Marquise Pendant - CLEARANCE New dsPremeir 04282022 while the amount of Iron

while the amount of Iron in the stone varies its shade of purple

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

white and occasionally gray or brown

Onyx is a black and white banded Chalcedony

red and white -- as well as for its opacity and patterns

Cuprite 24x36mm Free Form Marquise Pendant - CLEARANCE New dsPremeir 04282022 while the amount of IronCuprite is a copper oxide mineral frequently found in association with copper deposits as well as azurite, chrysocolla, malachite and a variety of iron oxide minerals. Usually occurring in a deep red color, Dakota Stones Cuprite ranges from pale to deep blue green, with flecks of light to deep red and patterns of copper brown. The name derives from cuprum, the Latin word for copper.