mineral
Grape Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, exhibits purple to green botryoidal crystal aggregates with a vitreous to pearly luster and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, exhibits purple to green botryoidal crystal aggregates with a vitreous to pearly luster and conchoidal fracture.
Formation & geological history
Formed in volcanic cavities and hydrothermal environments where silica-rich fluids precipitated microcrystalline quartz spheres over millions of years.
Uses & applications
Prized by mineral collectors and used primarily in ornamental jewelry and metaphysical displays.
Geological facts
Despite its name, grape agate is actually a type of botryoidal chalcedony rather than a true agate because it typically lacks distinct banding.
Field identification & locations
Easily identified by its distinctive cluster-like grape formations; predominantly found and mined in the Sulawesi region of Indonesia.
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