mineral
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, pale greenish-blue color, vitreous to waxy luster, and a microcrystalline or cryptocrystalline quartz structure.
Identified More mineral →
Explore Botryoidal Chalcedony 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, pale greenish-blue color, vitreous to waxy luster, and a microcrystalline or cryptocrystalline quartz structure.
Formation & geological history
Formed through the deposition of silica-rich solutions from low-temperature hydrothermal waters or groundwater filling rock cavities.
Uses & applications
Commonly used in lapidary arts, wire-wrapped jewelry, and mineral specimen collecting.
Geological facts
The characteristic grape-like or rounded surface is known as a botryoidal habit, formed by radial crystal growth.
Field identification & locations
Identified by its bulbous texture and hardness that scratches glass, frequently found in volcanic cavity linings worldwide.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
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