mineral
Druzy amethyst (likely)
Quartz, SiO₂, with purple coloration from trace iron and irradiation
AI-generated identification · may be incorrectSmall cavity or matrix coated in sparkling quartz crystals; purple to lavender color and vitreous luster. Quartz hardness is 7 Mohs, with trigonal crystals and no cleavage; the image alone cannot confirm the identification.
Identified More mineral →
Explore Druzy amethyst (likely) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Small cavity or matrix coated in sparkling quartz crystals; purple to lavender color and vitreous luster. Quartz hardness is 7 Mohs, with trigonal crystals and no cleavage; the image alone cannot confirm the identification.
Formation & geological history
Quartz crystals grow from silica-rich fluids in cavities, commonly in volcanic rocks; amethyst-bearing geodes form across a range of geological ages.
Uses & applications
Used as a decorative specimen and in jewelry; larger pieces are collected or used for display.
Geological facts
Druzy describes a coating of many tiny crystals rather than a separate mineral species.
Field identification & locations
Look for tightly packed, glittering crystal tips and purple hues; amethyst occurs in places including Brazil, Uruguay, and Zambia. The specimen’s small size and uncertain identity limit a visual estimate.
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
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary