Dalmatian Jasper
Microcrystalline Quartz var. Dalmatian Jasper · Decorative Stone and Semi-Precious Gemstone
Crystal System
Trigonal, massive or microcrystalline habit
Mineral Group
Silicates, specifically Tectosilicates
Chemical Formula
SiO2 with inclusions of tourmaline and arfvedsonite
Formation Process
Igneous formation as a microcrystalline quartz rock, often found in volcanic or intrusive environments
About This Crystal
An opaque, tumbled stone featuring a creamy beige to greyish-white base color speckled distinctively with dark black or brown spots composed of tourmaline or arfvedsonite. The surface is smooth and polished with a waxy to vitreous luster.
Physical Characteristics
Color is off-white or beige with black spots, white streak, conchoidal fracture, lacks distinct cleavage, specific gravity around 2.65, brittle tenacity, and generally non-fluorescent
Optical Properties
Singly or doubly refractive microcrystalline aggregate, refractive index around 1.544 to 1.553, no pleochroism or major optical phenomena
Hardness & Durability
Origin Region
Primarily sourced from Chihuahua, Mexico, as well as parts of Africa
Hardness & Durability
Mohs hardness of 6.5 to 7, making it durable and suitable for general jewelry use and everyday wear, though care should be taken against hard impacts
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid harsh chemicals, ultrasonic cleaners, and prolonged exposure to extreme heat
Rarity & Value
Common, widely available in the gem and mineral market, inexpensive and generally affordable for tumbled stones and carvings
Special Characteristics
Distinctive spotted Dalmatian-like pattern created by contrasting dark mineral inclusions within a light-colored feldspar and quartz matrix
Lore & History
Popular in modern crystal healing as a stone associated with grounding, bringing joy, calming the emotional body, and connecting to the base and earth chakras, though these are traditional beliefs