mineral

Blue magnesite beads

Magnesite (MgCO₃), likely stabilized or dyed; brown veining may reflect matrix or iron oxides

AI-generated identification · may be incorrect

Typically Mohs 3.5–4.5, sky-blue to blue-green, waxy to vitreous luster, trigonal crystal structure, and good rhombohedral cleavage; these beads are polished and drilled. The appearance can resemble turquoise, but the rounded beads and pale blue body with irregular brown webbing are characteristic of treated magnesite.

Identified August 7, 2026More mineral →

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Physical properties

Formation & geological history

Magnesite forms mainly by alteration of magnesium-rich rocks and hydrothermal or sedimentary processes, commonly in Precambrian to younger ultramafic and carbonate terrains. These are human-shaped jewelry specimens, so their exact geological age and locality cannot be determined visually.

Uses & applications

Used primarily for beads, carvings, and inexpensive ornamental jewelry; it is not generally used as high-value gemstone material. Magnesite is also an industrial source of magnesium and refractory magnesia.

Geological facts

Blue magnesite is often dyed to imitate turquoise, while natural blue material is less common. It should be kept away from acids, heat, harsh chemicals, and prolonged soaking.

Field identification & locations

Identify by its relatively low hardness, light weight, porous or chalky texture beneath polish, and acid reaction if untreated; turquoise is generally denser and harder. Common sources include China, Brazil, Austria, and the United States.