Snowflake Obsidian 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Calcite sometimes with a striking black

sometimes with a striking black or brown matrix therefore giving it a more traditional look with blue dominance

and it is known to have been widely used in Aztec and Native American cultures

Dutch Colonel Hendrik Von Prehn

Petrification occurs when the wood is covered by sedimentary rock

resulting in concentric bands of color

Snowflake Obsidian 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Calcite sometimes with a striking blackSnowflake Obsidian is a volcanic black stone with small, white, radially clustered inclusions of cristobalite in the black glass, producing snowflake patterns. Obsidian is formed when felsic lava cools without crystal growth. It is sometimes used for scalpel blades in cardiac surgery, as Obsidian can be formed into a blade many times sharper than steel surgical blades.