OBSIDIAN Gold Sheen Large (20-30mm) polished stones 1 lb. HAND SORTED Packages may including clear quartz

Packages may including clear quartz

Fortunately material from these mines is quite valuable

most are between 1/4 and 5/8 inch long

for crafts

OBSIDIAN Gold Sheen Large (20-30mm) polished stones 1 lb. HAND SORTED Packages may including clear quartzOBSIDIAN Obsidian is also known as "volcanic glass" as it is formed when rapidly cooling lava has a high silica content and other conditions are present. Normally, Obsidian is black but other minerals or properties in the lava can cause coloration. A very common colored obsidian is a brick red variety called "Mahogany Obsidian". Gold and silver "sheen" obsidian are relatively uncommon. Gold sheen is caused by gas bubbles aligned along layers of lava