mineral
Jasper and Obsidian mix or Tourmalinated Quartz
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and amorphous to microcrystalline structure.
Identified More mineral →
Explore Jasper and Obsidian mix or Tourmalinated Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and amorphous to microcrystalline structure.
Formation & geological history
Formed via rapid cooling of silica-rich lava or hydrothermal precipitation in volcanic environments.
Uses & applications
Used in ornamental carvings, polished tumbled stones, jewelry, and crystal healing collections.
Geological facts
This tumbled specimen shows dual mineral banding, combining deep black areas with earthy yellowish inclusions.
Field identification & locations
Identified by its high hardness, smooth polished feel, and distinct dual-color contrast; found globally in gravels and river beds.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous