gemstone
Agate
Silicon dioxide (SiO2)
Hardness: 6.5-7 (Mohs scale), Color: variable (white, blue, and brown in this piece), Luster: Waxy to vitreous, Crystal structure: Cryptocrystalline, Cleavage: None
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: variable (white, blue, and brown in this piece), Luster: Waxy to vitreous, Crystal structure: Cryptocrystalline, Cleavage: None
Formation & geological history
Formed in cavities of volcanic rocks or ancient lavas, often filling vesicles or veins.
Uses & applications
Used in jewelry, decorative items, and lapidary arts.
Geological facts
Agate is a variety of chalcedony characterized by its fine grain and bright color.
Field identification & locations
Identified by its banding patterns and translucency. Commonly found worldwide.
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