igneous
Dalmatian Jasper
Microcrystalline Quartz with Tourmaline
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, cream to white background with distinctive black or dark brown spots, waxy to vitreous luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, cream to white background with distinctive black or dark brown spots, waxy to vitreous luster, and conchoidal fracture.
Formation & geological history
Formed in ancient volcanic hydrothermal environments, often classified geologically as a fine-grained quartz-feldspar rock containing tourmaline inclusions.
Uses & applications
Primarily used for lapidary work, carved into polished stones, tumbled specimens, beads, and holistic crystal healing jewelry.
Geological facts
Despite its trade name containing jasper, it is actually a microcrystalline quartz intrusion containing amphibole or tourmaline spots rather than true jasper.
Field identification & locations
Easily identified by its unmistakable cream-and-black spotted pattern; commonly sourced from deposits in Chihuahua, Mexico.
