Aventurine

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Distinguished by a glittering metallic shimmer called aventurescence, aventurine is a variety of quartz whose sparkle comes from aligned flakes of fuchsite mica. It appears most famously in green but also in reddish brown, blue, and orange, and it registers roughly 6.5 to 7.0 on the Mohs scale. The finest green material comes from India, where it has been carved into beads and figurines for centuries, while blue aventurine is drawn from Brazil and reddish specimens from Norway. Affordable, durable, and moderately priced, it remains one of the most widely used semi-precious stones for jewelry and decorative carving.

Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 7,0 – 6,5

Specific Gravity 2,64 – 2,69

Refractive Index 1,544 – 1,553

Crystal System Triclinic

Cleavage None

Fracture Conchoidal,Splintery

Color various

Birefringence 0,007

Pleochroism Absent

Mohs Hardness

Mohs Hardness: 7,0 – 6,5

1 Soft10 Hard

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

Where to Buy Aventurine

Blue Nile Fine jewelry retailer

James Allen Gemstone jewelry

Brilliant Earth Ethically sourced gems

Amazon Wide selection

Links may earn a commission at no extra cost to you.

About Aventurine

La aventurina es una variedad de cuarzo caracterizada por su llamativo efecto de destellos metálicos conocido como aventurescencia, producido por inclusiones de laminillas paralelas de fuchsita (mica verde), hematita o goetita. El color más común es el verde, aunque también existe en marrón, azul, naranja y roja según el tipo de inclusiones. La aventurescencia, ese centelleo interior luminoso, le da una apariencia única entre las piedras ornamentales. Se utiliza ampliamente en joyería, tallado y objetos decorativos. Los mejores ejemplares verdes provienen de India, Brasil y Rusia. No debe confundirse con el vidrio aventurina, que es artificial.