Jasper

About Jasper

Jasper belongs to the tectosilicate class in the quartz group (microcrystalline) and has the chemical formula SiO2. It crystallizes in the trigonal system and is one of the most visually varied minerals in the collector market.

Identification & care

Specimens usually show massive cryptocrystalline; nodular, vein-filling; patterned by mineral inclusions. Its color range is broad, including red, brown, yellow, green, blue, cream, black, and often banded or patterned. The luster is dull to waxy, the streak is white, and specimens are typically opaque. The fracture is conchoidal to splintery, which is one of its key identifying features.

Collector context