gemstone
Colorless faceted gemstone, likely quartz
Quartz (SiO₂), tentatively identified from the image
AI-generated identification · may be incorrectTransparent to translucent and colorless, with a glassy luster; quartz has a trigonal crystal structure, no cleavage, and Mohs hardness 7. The pictured stone is cut and polished, so its original crystal habit is not visible.
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Physical properties
Transparent to translucent and colorless, with a glassy luster; quartz has a trigonal crystal structure, no cleavage, and Mohs hardness 7. The pictured stone is cut and polished, so its original crystal habit is not visible.
Formation & geological history
If quartz, it formed as silica-rich fluids cooled in veins or cavities; quartz occurs in rocks of many geological ages. The image alone cannot confirm the material or its geological age.
Uses & applications
Faceted quartz is used in jewelry and as an affordable diamond substitute; quartz also has major industrial uses in glass and electronics.
Geological facts
Colorless quartz is commonly called rock crystal. Faceted glass or another clear gemstone can look similar in a photograph.
Field identification & locations
A gemological test is needed for reliable identification; quartz scratches glass and is harder than most imitations. Common sources include Brazil, Madagascar, and the United States.
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