Obsidian 8x10mm Triangle Cut Faceted Puff Oval - 15-16-Inch Dendritic Black Opal this semi to precious variety

this semi to precious variety of quartz is found in many locations around the world

Red Tiger Eye is actually Brown Tiger Eye which has been heat treated to bring out the red color

and turquoise is a leftover mineral from these practices

this opal variety is characterized by their dark base tone

Obsidian 8x10mm Triangle Cut Faceted Puff Oval - 15-16-Inch Dendritic Black Opal this semi to precious varietyEssentially a volcanic glass, Obsidian ranges in color from opaque black, to green, brown, mahogany, black with rainbow colors, black with snowflake patterns, black with a golden sheen, and translucent black (Apache Tears)