Obsidian 8x10mm Triangle Cut Faceted Puff Oval - 15-16-Inch Dendritic Black Opal this opal variety is characterized

this opal variety is characterized by their dark base tone

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

from deep oranges to creamy off-white tones

white or brown

Obsidian 8x10mm Triangle Cut Faceted Puff Oval - 15-16-Inch Dendritic Black Opal this opal variety is characterizedEssentially 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)