mineral

Yellow Apatite Sphere (Polished)

Fluorapatite / Ca5(PO4)3F

Hardness: 5 on Mohs scale; Color: Golden yellow to honey brown; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22.

Hardness: 5 on Mohs scale
Color: Golden yellow to honey brown
Luster: Vitreous to sub-resinous

Identified March 9, 2026More mineral →

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Physical properties

Hardness: 5 on Mohs scale; Color: Golden yellow to honey brown; Luster: Vitreous to sub-resinous; Crystal structure: Hexagonal; Cleavage: Poor; Specific gravity: 3.16 to 3.22.

Formation & geological history

Formed as a primary mineral in igneous rocks (pegmatites) or metamorphic rocks (marbles and skarns). Yellow varieties are commonly sourced from Mexico (Durango) or Madagascar and can date back hundreds of millions of years depending on the deposit.

Uses & applications

Used primarily as a collector's specimen or for ornamental/metaphysical purposes in this sphere form. High-quality transparent pieces are faceted as gemstones, though they are soft for most jewelry. In industry, phosphate rock (apatite) is the primary source of phosphorus for fertilizer.

Geological facts

Apatite is the defining mineral for value 5 on the Mohs scale. The name is derived from the Greek word 'apate', which means 'deceit', because it was historically often confused with other minerals like peridot, beryl, or topaz.

Field identification & locations

Identify in the field by its distinct hexagonal crystal habit and its inability to scratch glass but being easily scratched by a steel knife. Common locations include Cerro de Mercado (Mexico), Madagascar, and Brazil. Collectors should look for internal 'flash' and clarity.

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