Rock Identifier
Dzi Bead Bracelet with Agate and Obsidian (Chalcedony (SiO2) and Volcanic Glass (SiO2 + impurities)) — gemstone
gemstone

Dzi Bead Bracelet with Agate and Obsidian

Chalcedony (SiO2) and Volcanic Glass (SiO2 + impurities)

Hardness: 5-7 (Mohs). Colors: Yellow-amber (chalcedony), black (obsidian/agate), and etched cream patterns. Luster: Vitreous to waxy. Structure: Cryptocrystalline to amorphous. Specific gravity: 2.4-2.7.

Hardness
5-7 (Mohs)
Luster
Vitreous to waxy
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Physical properties

Hardness: 5-7 (Mohs). Colors: Yellow-amber (chalcedony), black (obsidian/agate), and etched cream patterns. Luster: Vitreous to waxy. Structure: Cryptocrystalline to amorphous. Specific gravity: 2.4-2.7.

Formation & geological history

Formed via volcanic activity and silica deposition. Dzi beads are culturally significant etched agates, often originating from Tibet, Nepal, or India; the etching is a surface treatment applied for symbolic reasons.

Uses & applications

Primarily used in jewelry, as spiritual talismans, and as collector items in Buddhist and Himalayan cultures.

Geological facts

Dzi beads are often called 'Heaven's Pearls' and are believed in Tibetan culture to bring protection and luck. The patterns (like the 'eyes' on the central bead) denote different spiritual meanings.

Field identification & locations

Identify by the characteristic etched 'eye' patterns and the waxy luster of the agate. Look for signs of wear and internal crazing (scales) to distinguish older specimens from modern replicas.