gemstone

White chalcedony cabochon ring

Chalcedony (microcrystalline quartz, SiO₂), likely white quartz variety

AI-generated identification · may be incorrect

Opaque to translucent milky-white, waxy to vitreous luster, cryptocrystalline structure, no visible cleavage, Mohs hardness 6.5–7, specific gravity about 2.60. The specimen is a polished oval cabochon set in a metal ring with decorative prongs.

Identified August 18, 2026More gemstone →

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Physical properties

Formation & geological history

Chalcedony forms when silica-rich groundwater fills cavities and fractures, commonly in volcanic rocks; individual deposits range from Paleozoic to recent. The visible object is human-processed, but remains a geological gemstone.

Uses & applications

Used for rings, cabochons, carvings, and ornamental objects. Common white chalcedony typically has modest commercial value.

Geological facts

Chalcedony is quartz whose crystals are too small to see unaided; color and banding produce varieties such as agate, jasper, onyx, and carnelian.

Field identification & locations

The image strongly supports chalcedony, though white jade, quartz, or glass imitation cannot be excluded without tests. Check for glass-like conchoidal fracture, hardness against steel (carefully), and lack of bubbles; chalcedony is common in Deccan volcanic terrains around southern India, including the reported region.