sedimentary

African Turquoise (Jasper)

Silicon Dioxide (SiO2) - Macro-crystalline Quartz with inclusions

AI-generated identification · may be incorrect

Hardness: 6.5–7 (Mohs scale); Color: Teal, green-blue, and light green with black/brown matrix inclusions; Luster: Vitreous to waxy; Crystal structure: Trigonal (Microcrystalline); Cleavage: None (conchoidal fracture).

Hardness: 6
Luster: Vitreous to waxy

Identified March 14, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation of volcanic ash and silicate-rich fluids in sedimentary layers over millions of years. Despite the name, it is a form of jasper (chalcedony) primarily sourced from Africa.

Uses & applications

Primarily used in the jewelry industry for beads, cabochons, and decorative items. In spiritual communities, it is often marketed as a stone of 'evolution' and growth.

Geological facts

African Turquoise is not actually turquoise; it is a type of jasper. The matrix seen in the beads is caused by mineral inclusions like iron and copper, which can give it a turquoise-like appearance when polished.

Field identification & locations

Identify in the field by its hardness (will scratch glass, unlike real turquoise which is softer) and its distinct mottled patterns. Commonly found in sub-Saharan African regions. Collectors should look for unique matrix patterns.