gemstone
Green Chalcedony (Batu Akik)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vitreous to waxy luster, crypto-crystalline structure, and green color typically enhanced by chromium, nickel, or dye.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, vitreous to waxy luster, crypto-crystalline structure, and green color typically enhanced by chromium, nickel, or dye.
Formation & geological history
Forms in low-temperature hydrothermal veins and cavities of volcanic or sedimentary rocks globally, frequently found in Southeast Asia including Indonesia.
Uses & applications
Widely used in traditional jewelry, cabochons, and rings, holding significant cultural popularity as talismanic stones.
Geological facts
Green chalcedony is popularly traded across Indonesia as Batu Akik, deeply tied to local lapidary traditions and ornamental gemstone markets.
Field identification & locations
Identified by its conchoidal fracture, waxy luster, and lack of cleavage; commonly sourced from local gem dealers and artisan markets.
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