mineral
Tumbled opalite (likely man-made glass)
Opalite, a trade name for opalescent glass; not natural opal
AI-generated identification · may be incorrectTranslucent 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.
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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.
