mineral

Mixed Tumbled Quartz and Chlorite Quartz

Silicon Dioxide (SiO2) with inclusions

Hardness: 7 on Mohs scale. Color: Clear, smoky, grey, and green. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None, conchoidal fracture. Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Clear, smoky, grey, and green
Luster: Vitreous (glassy)

Identified June 26, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale. Color: Clear, smoky, grey, and green. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None, conchoidal fracture. Specific Gravity: 2.65.

Formation & geological history

Formed from silica-rich hydrothermal solutions or cooling magma in veins and geodes. Many in this sample contain green chlorite or rutile inclusions formed during the secondary crystallization phase.

Uses & applications

Used primarily for lapidary jewelry, decorative vase fillers, crystal healing/metaphysical collections, and souvenir tumbled stones.

Geological facts

The green 'mossy' appearance in the darker stones is likely due to chlorite inclusions. Quartz is the second most abundant mineral in Earth's continental crust.

Field identification & locations

Identify by a glass-like luster and their ability to scratch glass but not being scratched by steel. Found worldwide in mountain ranges, including Brazil, USA (Arkansas), and the Alps.

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