mineral

Aventurine

Quartz with fuchsite inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: Green, blue-green, silvery green. Luster: Vitreous to greasy, with a distinctive shimmering or glistening effect (aventurescence) caused by mineral inclusions. Crystal system: Trigonal.

Hardness: 7 on Mohs scale
Color: Green, blue-green, silvery green

Identified August 5, 2026More mineral →

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Physical properties

Formation & geological history

Forms in metamorphic environments, particularly in quartz veins and pegmatites, often through hydrothermal activity and regional metamorphism where chromium-rich mica (fuchsite) becomes trapped within growing quartz.

Uses & applications

Commonly used in lapidary work, making tumbled stones, carvings, decorative objects, and occasionally in jewelry.

Geological facts

The shimmering effect known as 'aventurescence' is named after this mineral, derived from the Italian word 'avventura', meaning 'by chance', referring to the chance discovery of aventurine glass.

Field identification & locations

Can be identified in the field by its distinct pale to medium green color combined with a characteristic metallic or glittering sheen when turned in the light. Found worldwide including India, Brazil, Russia, and the USA.