mineral
Polished agate pendant
Microcrystalline quartz (chalcedony), SiO₂; agate is banded chalcedony
AI-generated identification · may be incorrectTranslucent white to pale blue-gray with a waxy-to-glassy luster; hardness 6.5–7 Mohs, trigonal quartz structure, no cleavage. The specimen is polished and drilled or fitted with a metal loop; visible banding is limited.
Identified More mineral →
Explore Polished agate pendant in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Translucent white to pale blue-gray with a waxy-to-glassy luster; hardness 6.5–7 Mohs, trigonal quartz structure, no cleavage. The specimen is polished and drilled or fitted with a metal loop; visible banding is limited.
Formation & geological history
Agate forms as silica-rich fluids fill cavities in volcanic rock, depositing chalcedony in layers. The pendant’s geological age and precise source cannot be determined from the image.
Uses & applications
Used as jewelry and a decorative collectible; agate is also used for carvings and ornamental objects.
Geological facts
Agate’s characteristic bands arise from successive mineral deposition, though some chalcedony is weakly banded or appears nearly uniform.
Field identification & locations
Look for translucency, waxy luster, and hardness sufficient to resist scratching by steel; natural agate commonly occurs in volcanic regions worldwide. A photograph cannot confirm whether this stone is natural or treated.
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
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