Mixed Dark Lepidocrocite 5x8mm Large Hole Faceted Rondelle - 8 Inch Stone Type_Black Tourmalinated Quartz and it has been used

and it has been used throughout history for various purposes

com originate in the Philippines or Indonesia

Rainbow Obsidian earned its name from the chatoyant

rust and cream hues

and the green color is caused by a reaction in the stone when the chrome is introduced to water

Mixed Dark Lepidocrocite 5x8mm Large Hole Faceted Rondelle - 8 Inch Stone Type_Black Tourmalinated Quartz and it has been usedAn iron oxide hydroxide mineral, Lepidocrocite forms when iron containing substances rust underwater. It is commonly found in the weathering of primary iron minerals and in iron ore deposits, and can be red to reddish brown. When skillfully cut and polished, those substances add a delicate accent to the otherwise clear gemstone.