gemstone

Polished rutilated quartz cabochon

Quartz (SiO₂) with rutile (TiO₂) inclusions

AI-generated identification · may be incorrect

Transparent to smoky-brown oval cabochon with a glassy luster and visible needle-like inclusions; quartz hardness 7 Mohs, trigonal crystal system, no cleavage. The pictured stone appears polished and possibly set or backed; exact identification needs inspection.

Identified October 3, 2026More gemstone →

Explore Polished rutilated quartz cabochon in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed as quartz crystallized around rutile needles in mineral-rich veins or pegmatitic environments; the specimen’s geological age and source cannot be determined from the image.

Uses & applications

Cut and polished for jewelry and collecting; quartz is also widely used in glassmaking and electronics, while rutile is an important titanium ore.

Geological facts

Rutile inclusions can create striking golden, reddish, or dark needles and are sometimes marketed as “Venus-hair” quartz.

Field identification & locations

Look for natural-looking needle inclusions within clear quartz, rather than surface scratches; similar stones occur in Brazil, Madagascar, and other quartz-producing regions.