sedimentary

Fancy Jasper

Silicon Dioxide (SiO2) with iron and organic inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs), Color: Multicolored (green, red, brown, yellow), Luster: Vitreous to waxy, Crystal Structure: Hexagonal (Trigonal), Microcrystalline, Cleavage: None, Fracture: Conchoidal.

Hardness: 6

Identified June 3, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs), Color: Multicolored (green, red, brown, yellow), Luster: Vitreous to waxy, Crystal Structure: Hexagonal (Trigonal), Microcrystalline, Cleavage: None, Fracture: Conchoidal.

Formation & geological history

Formed through the accumulation of fine-grained silica in hydrothermal veins or sedimentary environments. Colors are created by varying amounts of iron oxides, hydroxides, and other minerals that infiltrated the quartz during formation.

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative ornaments, stone carvings, and as a popular specimen for crystal collecting.

Geological facts

Fancy Jasper is often referred to as the 'Stone of Tranquility.' While mostly jasper, it is technically an opaque variety of chalcedony. No two pieces are ever identical due to the chaotic swirl of mineral impurities.

Field identification & locations

Identify by its opaque nature, high hardness (cannot be scratched by steel), and characteristic forest green mixed with brick red or dusty mauve. Commonly found in India, Brazil, and Africa.