mineral
Grape Agate
Chalcedony (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7; displays botryoidal crystal structure with purple, green, or white colors and a waxy luster.
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Physical properties
Mohs hardness of 6.5 to 7; displays botryoidal crystal structure with purple, green, or white colors and a waxy luster.
Formation & geological history
Formed in volcanic cavities and hydrothermal environments through the deposition of silica-rich solutions over millions of years.
Uses & applications
Prized by mineral collectors and used in ornamental carvings, gemstone cabochons, and unique jewelry pieces.
Geological facts
Despite its common name, grape agate is actually a variety of botryoidal chalcedony rather than true agate since it lacks distinct banding.
Field identification & locations
Easily identified by its distinctive cluster of tiny, grape-like purple sphere formations, primarily sourced from Sulawesi, Indonesia.
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