Brecciated Jasper
Quartz var. Jasper (Microcrystalline Quartz) · Decorative Stone and Mineral Specimen
Crystal System
Trigonal, massive or microcrystalline habit
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2 with iron oxide and clay impurities
Formation Process
Sedimentary or hydrothermal deposition where silica-rich fluids fill fractures in existing rock, cementing fragments together.
About This Crystal
An opaque, tumbled pebble featuring a mottled pattern of reddish-brown and whitish-cream patches. The surface shows a smooth, polished texture with angular broken fragments cemented by secondary quartz minerals.
Physical Characteristics
Color ranges from deep red-brown to white and yellowish hues; white streak; no cleavage; conchoidal fracture; specific gravity around 2.65; brittle tenacity; generally inert to UV light.
Optical Properties
Singly refractive aggregate under polariscope, though individual micro-crystals are doubly refractive; vitreous to waxy luster; completely opaque.
Hardness & Durability
Origin Region
Found worldwide including Brazil, India, Russia, and the USA. Forms in sedimentary environments and hydrothermal veins.
Hardness & Durability
Mohs hardness of 6.5 to 7; good toughness due to microcrystalline interlocking structure; stable under normal environmental conditions.
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid harsh chemicals and prolonged exposure to direct sunlight, though jasper is generally colorfast.
Rarity & Value
Common and widely accessible; value depends on aesthetic pattern, polish quality, and size, typically ranging from inexpensive to moderate for polished stones.
Special Characteristics
Distinctive brecciated structure showing tectonic fracturing and healing by subsequent silica infiltration.
Lore & History
Historically used by ancient peoples for amulets and tools. In modern metaphysical practices, it is associated with grounding, vitality, and stability, connected primarily to the root chakra.