mineral

Polished multicolored stone bead bracelet

Likely dyed or treated agate/jasper, chiefly microcrystalline quartz (SiO₂)

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; rounded, polished beads with opaque to translucent red, green, gray, and cream bands or patches; waxy to glassy luster and no visible cleavage. Exact mineral identity is uncertain because the beads appear strongly dyed or composite-treated.

Identified September 18, 2026More mineral →

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Physical properties

Formation & geological history

Agate and jasper form when silica-rich groundwater fills cavities and fractures, commonly in volcanic rocks, developing layered chalcedony over long geological periods. The beads were later cut, drilled, polished, and possibly dyed or coated by humans.

Uses & applications

Used primarily for inexpensive jewelry, decorative crafts, and beadwork; commercial value is generally modest.

Geological facts

The vivid, repeated colors and surface appearance are consistent with treated commercial agate, jasper, or reconstructed stone rather than a single identifiable natural rock.

Field identification & locations

Check for natural banding, color concentrated in cracks or drill holes, dye rubbing, and uniformity between beads; a glass or steel scratch test should be avoided on finished jewelry. Similar material is commonly sold from China, India, Brazil, and Madagascar.