
mineral
Indian Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Hardness: 6.5–7 on Mohs scale. Color: Highly varied including shades of green, mossy patterns, earthy browns, grays, and oranges. Luster: Vitreous to waxy. Crystal Structure: Trigonal (microcrystalline). Cleavage: None (conchoidal fracture). Specific Gravity: 2.58–2.64.
- Hardness
- 6
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5–7 on Mohs scale. Color: Highly varied including shades of green, mossy patterns, earthy browns, grays, and oranges. Luster: Vitreous to waxy. Crystal Structure: Trigonal (microcrystalline). Cleavage: None (conchoidal fracture). Specific Gravity: 2.58–2.64.
Formation & geological history
Formed through the deposition of silica from groundwater within cavities in volcanic igneous rocks (basalt lava pulses). Predominantly found in the Deccan Traps of India, dating back approximately 65 million years (Late Cretaceous).
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons, pendants), and decorative ornaments. It is highly valued in the 'metaphysical' and crystal healing market for grounding and protection collections.
Geological facts
Also known as the 'Stone of Eternity' in some cultures, it has been used for over 3,000 years to create amulets. Despite being called 'agate,' many specimens are technical mixtures of chalcedony with moss-like inclusions from iron or manganese.
Field identification & locations
Identify by its waxy luster, variety of earthy colors often in the same strand, and its inability to be scratched by a steel knife. It is mostly found in riverbeds or volcanic regions in India. For collectors, look for high translucency and distinct moss-like patterns.
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