sedimentary

Fancy Jasper

Silicon Dioxide (SiO₂)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Multi-colored (red, green, tan, mauve); Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Multi-colored (red, green, tan, mauve)
Luster: Vitreous to waxy

Identified April 9, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Multi-colored (red, green, tan, mauve); Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica from water in volcanic ash or sedimentary environments. The colors are created by mineral impurities such as iron oxides and chlorite trapped during crystallization.

Uses & applications

Used primarily in lapidary work for cabochons, beads, decorative carvings, and as a collector's gemstone. Also popular in metaphysical and crystal healing communities.

Geological facts

Jasper is a cryptocrystalline variety of quartz. The name 'Fancy Jasper' specifically refers to specimens with a diverse 'rainbow' of mottled colors often found in India.

Field identification & locations

Identify in the field by its high hardness (doesn't scratch with a steel knife), conchoidal fracture (smooth, curved breaks), and opaque appearance. Commonly found in riverbeds and arid regions where volcanic activity occurred.