mineral
Moss Agate / Green Jasper
Silicon Dioxide (SiO2) with chlorite/hornblende inclusions
Hardness: 6.5-7 on Mohs scale; Luster: Vitreous to waxy; Color: Dark forest green with earthy brown and clear translucent quartz patches; Structure: Cryptocrystalline aggregate
- Hardness
- 6
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale; Luster: Vitreous to waxy; Color: Dark forest green with earthy brown and clear translucent quartz patches; Structure: Cryptocrystalline aggregate
Formation & geological history
Formed from silica-rich hydrothermal fluids filling cavities in volcanic igneous rocks, where manganese or iron silicate inclusions form moss-like dendritic patterns.
Uses & applications
Polished tumbled stones are widely used in lapidary arts, jewelry making (cabochons, pendants), and decorative crystal collections.
Geological facts
Despite its name, Moss Agate is not actually a true banded agate, but rather a translucent chalcedony containing dark green mineral inclusions that resemble moss or foliage.
Field identification & locations
Identified by its high polish, translucency around edges, and dark green dendritic inclusions. Commonly found in India, Brazil, Uruguay, and western USA.
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