Polychrome Jasper

Physical Properties

Hardness: 6.5-7 on Mohs scale. Color: Multicolored (red, tan, grey, blue). Luster: Vitreous to waxy. Crystal Structure: Hexagonal (Microcrystalline/Cryptocrystalline). Cleavage: None. Specific Gravity: 2.6-2.9.

Formation & Geological History

Formed from the precipitation of silica in volcanic ash or sedimentary environments. The unique swirling colors are caused by varying levels of iron oxide and other mineral impurities during the crystallization process. Most specimens originate from late Cretaceous formations.

Uses & Applications

Used primarily for lapidary work, jewelry, stone carvings, ornamental decorations, and as metaphysical or healing stones in spiritual practices.

Geological Facts

Also known as Desert Jasper, it was first discovered in Madagascar around 2006 while searching for Ocean Jasper. Its vibrant colors are natural and not dyed, created by specific geological conditions during cooling.

Field Identification & Locations

Identify in the field by its opaque nature (unlike agate), smooth conchoidal fracture, and distinctive earthy swirls of color. Commonly found in large masses rather than individual crystals.

Identified on: 4/21/2026

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