mineral
Tumbled Stones Collection (Tiger's Eye, Snowflake Obsidian, Aventurine, etc.)
Silica minerals (primarily SiO2)
Hardness: 6.5-7 (Mohs scale), colors include iridescent gold/brown, black with white patches, green, and translucent gray. Luster is vitreous to silky.
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), colors include iridescent gold/brown, black with white patches, green, and translucent gray. Luster is vitreous to silky.
Formation & geological history
Typically formed through metamorphic processes (Tiger's Eye), igneous cooling (Obsidian), or hydrothermal activity (Quartz/Aventurine) over millions of years.
Uses & applications
Metaphysical collecting, jewelry making, lapidary education, and decorative vase fillers.
Geological facts
This set includes Snowflake Obsidian, which is volcanic glass with spherulite inclusions of cristobalite, and Tiger's Eye, which displays a chatoyant effect due to the replacement of crocidolite fibers.
Field identification & locations
Identify by color and unique patterns: Tiger's Eye has fibers, Snowflake Obsidian has 'snowflakes', and Aventurine has tiny sparkly inclusions (aventurescence). Found in Brazil, South Africa, and India.
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Schist
Metamorphic
Potassium Feldspar (Orthoclase)
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mineral
Gypsum (variety Selenite or Alabaster)
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Mineral
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic