sedimentary

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

AI-generated identification · may be incorrect

Hardness (Mohs): 6.5-7; Color: Olive green to deep forest green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Color: Olive green to deep forest green
Luster: Vitreous to waxy

Identified May 15, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the infiltration of silica-rich fluids into volcanic ash or fine-grained sedimentary layers, typically during the hydrothermal process or as secondary deposits in cavities.

Uses & applications

Used primarily in lapidary arts for cabochons, beads, and decorative carvings. It is also highly popular as a collector's pocket stone or used in metaphysical practices.

Geological facts

Jasper is an opaque variety of chalcedony. The green color in this specimen is usually caused by the presence of chlorite or iron silicate minerals like iron-rich actinolite.

Field identification & locations

Identify by its opacity (even on thin edges), smooth waxy feel, and conchoidal fracture patterns. Commonly found in river beds, beaches, and desert regions worldwide.