Jasper

Type: Mineral

Category: Mineral

Chemical/Scientific/Etc. : SiO2 (with varying impurities)

Description/Characteristics :  

Jasper is not a mineral but a variety of chalcedony, which is a microcrystalline variety of quartz.
colors, including red, brown, yellow, green, and shades of blue.
patterns, including speckles, stripes, swirls, and mottled designs.
dull to vitreous luster
Mohs scale of mineral hardness ranges from 6.5 to 7.
usually opaque.

Place of collections: