mineral

Tumbled turquoise-bearing rock

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a host rock such as limonite or silica

AI-generated identification · may be incorrect

Blue-green, opaque, waxy to dull luster with dark matrix veining; Mohs hardness 5–6, triclinic crystal system, and no prominent cleavage. The rounded shape indicates tumbling or natural abrasion.

Identified August 16, 2026More mineral →

Explore Tumbled turquoise-bearing rock in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Blue-green, opaque, waxy to dull luster with dark matrix veining; Mohs hardness 5–6, triclinic crystal system, and no prominent cleavage. The rounded shape indicates tumbling or natural abrasion.

Formation & geological history

Turquoise forms as a secondary copper–aluminum phosphate in arid, oxidized zones of copper deposits, commonly replacing or filling fractures in host rock. It is generally geologically young, forming during weathering near Earth’s surface.

Uses & applications

Used as a cabochon gemstone, beads, carvings, and ornamental inlay; quality depends on color, matrix pattern, hardness, and treatment. Lower-grade material is often sold as polished specimens.

Geological facts

The intense blue-green color results mainly from copper, while iron can shift it toward green. The image may also show chrysocolla or another copper mineral, so laboratory testing is needed for definitive identification.

Field identification & locations

Look for opaque blue-green color, waxy texture, low-to-moderate hardness, and copper-mineral matrix; avoid prolonged water, heat, and chemicals. Major sources include Iran, Arizona, Nevada, China, and Mexico.