gemstone
Green faceted gemstone pendant, likely green quartz
Quartz (SiO₂), possibly prasiolite or green-treated quartz
AI-generated identification · may be incorrectPale translucent green, vitreous luster, faceted oval cut; quartz has Mohs hardness 7 and a trigonal crystal structure. The image does not allow reliable confirmation of the stone or treatment.
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Physical properties
Pale translucent green, vitreous luster, faceted oval cut; quartz has Mohs hardness 7 and a trigonal crystal structure. The image does not allow reliable confirmation of the stone or treatment.
Formation & geological history
Quartz forms in silica-rich hydrothermal veins and igneous or metamorphic rocks over geologic time; green color may be natural or induced by treatment.
Uses & applications
Cut and set in jewelry; value depends on confirmed material, size, clarity, cut, and metal setting.
Geological facts
Prasiolite is uncommon naturally; much green quartz on the market is heat- or irradiation-treated amethyst or other quartz.
Field identification & locations
A gemological test is needed to distinguish quartz from glass or other pale-green gems; quartz’s hardness and refractive properties can help identify it. Quartz is found worldwide, including Brazil, Madagascar, and the United States.
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