mineral

Tumbled opalite (likely man-made glass)

Opalite, a trade name for opalescent glass; not natural opal

AI-generated identification · may be incorrect

Translucent milky blue-green with a yellowish edge and glassy luster; hardness about 5.5–6.5 Mohs, amorphous structure, and no cleavage. Its smooth rounded shape indicates tumbling.

Identified September 26, 2026More mineral →

Explore Tumbled opalite (likely man-made glass) in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Translucent milky blue-green with a yellowish edge and glassy luster; hardness about 5.5–6.5 Mohs, amorphous structure, and no cleavage. Its smooth rounded shape indicates tumbling.

Formation & geological history

Usually manufactured by melting silica-rich glass with additives to create an opalescent effect, then cutting and tumbling it. It has no geological age or natural formation environment.

Uses & applications

Commonly sold as an inexpensive decorative stone, bead, or jewelry cabochon; it has little industrial use.

Geological facts

Despite the name, opalite is generally not a natural mineral and should not be confused with precious opal, which is hydrated silica.

Field identification & locations

The even, cloudy color and uniform glassy appearance are typical of manufactured opalite; natural opal often shows more complex color play or distinctive banding. Commonly available in gift and crystal shops.