mineral
Aventurine Quartz
Quartz with fuchsite inclusions (SiO2)
Mohs hardness of 7; typically green, but can be red, brown, blue, or orange; vitreous to greasy luster; hexagonal crystal system; conchoidal fracture; specific gravity of 2.65.
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Physical properties
Mohs hardness of 7; typically green, but can be red, brown, blue, or orange; vitreous to greasy luster; hexagonal crystal system; conchoidal fracture; specific gravity of 2.65.
Formation & geological history
Forms through the hydrothermal metamorphism of quartzite and other silica-rich rocks, where platy mineral inclusions such as fuchsite or hematite become trapped within the growing quartz matrix.
Uses & applications
Used primarily in lapidary arts, gemstone jewelry, carving ornamental objects, and cherished by mineral collectors.
Geological facts
The characteristic glittery or shimmering effect, known as aventurescence, is caused by tiny reflective flakes of mineral inclusions trapped inside the quartz.
Field identification & locations
Identified by its distinct sparkly inclusions under light and quartz hardness, commonly sourced from India, Brazil, Russia, and the United States.
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