mineral

Tumbled serpentine (likely)

Serpentine-group minerals, commonly antigorite/lizardite: Mg₃Si₂O₅(OH)₄

AI-generated identification · may be incorrect

Olive-green to brown, opaque, waxy-to-dull luster, smoothly tumbled; hardness about 2.5–4 Mohs, poor cleavage, massive structure, and specific gravity roughly 2.5–2.6. The image alone cannot exclude nephrite jade, soapstone, or another green aggregate.

Identified August 21, 2026More mineral →

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Physical properties

Formation & geological history

Serpentine forms when magnesium-rich ultramafic rocks, especially peridotite, undergo hydrothermal alteration; occurrences range from Precambrian to modern tectonic zones. This specimen has been mechanically polished/tumbled.

Uses & applications

Used as ornamental stone, beads, carvings, and decorative objects; lower-grade material may be sold as “new jade.” It is generally unsuitable for durable construction because it is relatively soft and can weather readily.

Geological facts

Serpentine is a mineral group rather than one single mineral species, and its green color results mainly from iron and crystal-structure variations. Some serpentine varieties may contain chrysotile asbestos, so avoid cutting or generating dust unless tested.

Field identification & locations

Look for a greasy or waxy feel, subdued olive color, low hardness, and irregular cloudy veining; it will not scratch glass reliably. Common sources include California, New Zealand, Italy, Canada, Russia, and Zimbabwe.