.9" Polished Green Aventurine Sphere

About Aventurine

Aventurine is a shimmering, translucent to opaque variety of quartz best known for its distinctive aventurescence—a sparkling, reflective effect caused by tiny, light-scattering mineral inclusions. These inclusions, often fuchsite (a chromium-rich mica), hematite, goethite, or other metallic minerals, give aventurine its characteristic glimmer and its wide range of colors. The most common and popular form is green aventurine, colored by fuchsite, but the mineral also occurs in rich oranges, reds, blues, yellows, and even silvery whites depending on the dominant inclusions.

Geologically, aventurine forms when silica-rich fluids precipitate quartz that traps aligned or dispersed mineral platelets during crystallization. This combination of quartz’s durability and the optical effects of the inclusions produces a stone prized for both lapidary use and ornamental pieces. Aventurine is found worldwide, with notable sources in India (especially near Mysore and Chennai), Brazil, Russia, Austria, and Tanzania.