Black Obsidian 12x25-40mm Graduated Side Drilled Points - 15-16 Inch R1856 It is believed by some

It is believed by some to improve memory and increase analytical skills

and those that still exist today have been passed down for generations

At that time yellowish gems were called "topaz" in many parts of the world

For hand drilled beads (like pearls) there’s a bit more trial and error and guess work

Approximate Size:   3x4 Inches / 76x101mm / 7

Black Obsidian 12x25-40mm Graduated Side Drilled Points - 15-16 Inch R1856 It is believed by someEssentially 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)