gemstone

Tumbled dark-green stone, possibly bloodstone (green jasper)

Likely chalcedony (microcrystalline SiO₂); exact identification is uncertain from the photograph

AI-generated identification · may be incorrect

Small, rounded, polished, dark green with glossy luster. Chalcedony has Mohs hardness 6.5–7 and trigonal microcrystalline structure; the image does not show diagnostic inclusions or cleavage.

Identified September 26, 2026More gemstone →

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Physical properties

Small, rounded, polished, dark green with glossy luster. Chalcedony has Mohs hardness 6.5–7 and trigonal microcrystalline structure; the image does not show diagnostic inclusions or cleavage.

Formation & geological history

If bloodstone, it formed as silica-rich chalcedony filling cavities or fractures, with iron-oxide inclusions producing red spots. Such material occurs in varied geological settings and is not reliably age-dated from appearance alone.

Uses & applications

Tumbled stones are used in jewelry, decorative crafts, and mineral collections; bloodstone is also cut for cabochons.

Geological facts

Bloodstone is traditionally called heliotrope; its characteristic red flecks are absent or not visible here.

Field identification & locations

The polished shape suggests a tumbled specimen, but color alone cannot confirm bloodstone or distinguish it from other green stones. Common bloodstone sources include India, Brazil, and Australia.