mineral
Tumbled yellow calcite
Calcite (CaCO₃)
AI-generated identification · may be incorrectA small, rounded, polished specimen with honey-yellow and cream mottling and a vitreous to waxy luster. Calcite has Mohs hardness 3, trigonal crystal structure, perfect rhombohedral cleavage, and specific gravity about 2.7.
Identified More mineral →
Explore Tumbled yellow calcite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
A small, rounded, polished specimen with honey-yellow and cream mottling and a vitreous to waxy luster. Calcite has Mohs hardness 3, trigonal crystal structure, perfect rhombohedral cleavage, and specific gravity about 2.7.
Formation & geological history
Calcite forms in sedimentary, hydrothermal, and metamorphic settings, commonly from calcium-carbonate-rich waters; geological age depends on its source. The pictured stone has been mechanically tumbled and polished.
Uses & applications
Sold as a collectible and decorative stone, and used in some jewelry and carvings; calcite is also an important industrial source of lime and cement.
Geological facts
Calcite effervesces in dilute hydrochloric acid and shows strong double refraction in clear crystals. Yellow color commonly comes from trace impurities or inclusions.
Field identification & locations
The yellow color and polished, mottled appearance are consistent with tumbled calcite, though visual identification alone is not definitive. Calcite is widespread in limestone and marble deposits worldwide.
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