mineral

Green aventurine pendant

Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; opaque blue-green to green, with a vitreous-to-waxy polish and typically subtle aventurescence (sparkling inclusions). Aventurine is microcrystalline quartz with no obvious cleavage; specific gravity is approximately 2.6–2.7.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize as quartzite or chalcedony containing mica inclusions, commonly during metamorphic or hydrothermal processes. The pendant is cut and polished human-processed geological material; its precise age and source cannot be determined visually.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and inexpensive jewelry; the metal fitting is manufactured and not geological.

Geological facts

Natural aventurine usually shows irregular color and tiny reflective flecks, whereas dyed stones may have unnaturally uniform color. The pictured specimen appears to be a polished, elongated pendant.

Field identification & locations

Common sources include India, Brazil, Russia, Tanzania, and China. Confirm with a hardness test on an inconspicuous area, inspection for mica sparkle, and testing for dye; do not scratch valuable jewelry.