mineral
Tumbled Stones (various)
Mixed Silica-based Minerals (primarily Quartz and Chalcedony)
AI-generated identification · may be incorrectHardness: 6.5-7 Mohs; Color: Varied (red, pink, green, yellow, black); Luster: Vitreous to waxy; Structure: Microcrystalline (trigonal); Cleavage: None/Conchoidal fracture.
- Hardness
- 6
- Color
- Varied (red, pink, green, yellow, black)
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: Varied (red, pink, green, yellow, black); Luster: Vitreous to waxy; Structure: Microcrystalline (trigonal); Cleavage: None/Conchoidal fracture.
Formation & geological history
Formed primarily through hydrothermal processes and volcanic activity where silica-rich fluids cooled and crystallized. These specimens have been mechanically polished in a rock tumbler to create smooth, rounded shapes.
Uses & applications
Used for decorative purposes, meditation, energy healing practices, craft projects, and jewelry such as wire-wrapped pendants.
Geological facts
This assortment includes varieties like Red Jasper, Rose Quartz, Aventurine, and Unakite. The process of tumbling mimics natural river erosion but at a much faster pace using abrasive grits.
Field identification & locations
Identify by hardness (cannot be scratched by a steel blade) and lack of visible crystal faces due to the tumbling process. Common in gift shops and lapidary collections worldwide.
