mineral
Assorted Tumbled Gemstones
Mixed oxides and silicates (including Quartz, Chalcedony, and Feldspar variants)
AI-generated identification · may be incorrectHardness: 6-7 (Mohs); Color: Multi-colored (purple, green, red, yellow, etc.); Luster: Vitreous to waxy; Structure: Trigeminal and Monoclinic; Cleavage: None or Indistinct.
- Hardness
- 6-7 (Mohs)
- Color
- Multi-colored (purple, green, red, yellow, etc
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6-7 (Mohs); Color: Multi-colored (purple, green, red, yellow, etc.); Luster: Vitreous to waxy; Structure: Trigeminal and Monoclinic; Cleavage: None or Indistinct.
Formation & geological history
Formed via various geological processes including igneous crystallization, hydrothermal deposits, and sedimentary mineralization, often aged millions of years.
Uses & applications
Primarily used for jewelry, decorative arts, crystal healing, and as collector starter sets.
Geological facts
This assortment contains common semi-precious stones such as Amethyst, Rose Quartz, Jasper, and Aventurine. These are chemically silica (SiO2) with varying impurities.
Field identification & locations
Identify by color and transparency. Found globally in quartz veins and volcanic rocks. Collectors should look for vibrancy and lack of cracks.
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Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
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
Septarian Pebble
Septarian nodule / Concretion
sedimentary