Red Jasper

Physical Properties

Hardness: 6.5-7 (Mohs scale), Color: Brick red to brownish-red with occasional black streaks, Luster: Vitreous to dull when unpolished, Crystal Structure: Trigonal (Microcrystalline), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.58-2.91

Formation & Geological History

Formed through the infiltration of silica in sedimentary or volcanic rock layers, where mineral-rich water deposits microcrystalline quartz. The red color is derived from high iron content (hematite inclusions).

Uses & Applications

Predominantly used for lapidary work, jewelry (cabochons and beads), ornamental carvings, and as a popular specimen for rock tumbling and decorative landscaping.

Geological Facts

Jasper was a favorite gem in the ancient world; its name can be traced back in Arabic, Persian, Hebrew, Assyrian, Greek, and Latin. It is often referred to as the 'Stone of Endurance' in metaphysical circles.

Field Identification & Locations

Identify by its waxy to vitreous luster, extreme hardness (it will scratch glass), and its opaque nature even when held to a light source. Commonly found in large deposits in India, Brazil, Madagascar, and the USA.

Identified on: 4/18/2026

Mode: Standard