Mineral
Jasper or Agate pendant
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 6.5-7, Color: Light grey/white with tan/brown markings, Luster: Vitreous to waxy, Crystal Structure: Cryptocrystalline
- Hardness
- 6
- Luster
- Vitreous to waxy, Crystal Structure: Cryptocrystalline
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Physical properties
Hardness: 6.5-7, Color: Light grey/white with tan/brown markings, Luster: Vitreous to waxy, Crystal Structure: Cryptocrystalline
Formation & geological history
Formed from silica-rich fluids in cavities or fractures in host rocks over millions of years
Uses & applications
Commonly used in jewelry, lapidary arts, and as a decorative stone
Geological facts
Agate and Jasper are varieties of chalcedony. This particular piece has been cut and polished into a teardrop shape and drilled for use as a pendant.
Field identification & locations
Identify by its hardness (scratches glass), waxy luster, and lack of cleavage. Often found in volcanic rocks or as nodules in sedimentary rocks.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous