Rock Identifier
Green glassy slag or manufactured glass bead (Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral) — mineral
mineral

Green glassy slag or manufactured glass bead

Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral

AI-generated identification · may be incorrect

Translucent vivid green, vitreous luster, rounded/tumbled form with bubbles and flow-like internal textures. Hardness is approximately 5–6 Mohs; no cleavage and no crystal structure. The bright uniform color and vesicles strongly suggest glass rather than a natural gemstone.

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Physical properties

Translucent vivid green, vitreous luster, rounded/tumbled form with bubbles and flow-like internal textures. Hardness is approximately 5–6 Mohs; no cleavage and no crystal structure. The bright uniform color and vesicles strongly suggest glass rather than a natural gemstone.

Formation & geological history

Probably melted and rapidly cooled industrial glass or furnace slag; its geological age cannot be assigned. It may also be a recycled-glass decorative pebble, though the specimen is clearly glassy and human-processed.

Uses & applications

Used as decorative aggregate, jewelry cabochons, beads, and art glass. It has little value unless confirmed as a rare historic slag or attractive collectible glass.

Geological facts

Green color commonly comes from iron, chromium, or copper; trapped bubbles and curved conchoidal fractures are diagnostic of glass. It is not emerald, jade, or peridot.

Field identification & locations

Inspect for perfectly smooth conchoidal surfaces, bubbles, flow bands, and uniform color; these distinguish it from crystalline minerals. Natural green minerals usually show crystal grains, cleavage, or variable inclusions.