Rock Identifier
Polished gemstone beads, likely mixed agate or jasper (Likely microcrystalline quartz (SiO₂); exact varieties cannot be confirmed from the photograph) — gemstone
gemstone

Polished gemstone beads, likely mixed agate or jasper

Likely microcrystalline quartz (SiO₂); exact varieties cannot be confirmed from the photograph

AI-generated identification · may be incorrect

Small drilled, rounded beads with a glossy polish and varied blue, red, green, brown, and cream colors. Quartz has Mohs hardness 7 and a trigonal crystal structure; the beads’ specific gravity is about 2.6.

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Physical properties

Small drilled, rounded beads with a glossy polish and varied blue, red, green, brown, and cream colors. Quartz has Mohs hardness 7 and a trigonal crystal structure; the beads’ specific gravity is about 2.6.

Formation & geological history

If quartz-based, the material formed as silica-rich fluids filled cavities or fractures and crystallized, often long ago in volcanic rocks. The beads were subsequently cut, drilled, and polished; the image does not establish whether colors are natural or treated.

Uses & applications

Used in jewelry and craftwork; larger, patterned agate and jasper pieces are also collected.

Geological facts

The beads’ varied appearance may reflect different stones, natural color variation, or dyeing, which cannot be distinguished reliably from this image alone.

Field identification & locations

The drilled holes and smooth polish identify these as processed beads, not raw specimens. Agate and jasper are commonly sourced from volcanic regions worldwide; a hardness test and magnified inspection of banding or dye concentration can help identify them.