mineral
Garnet (Tumbled)
Almandine / Pyrope Garnet (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
Hardness: 6.5-7.5, Color: Deep reddish-brown to dark burgundy, Luster: Vitreous to resinous, Crystal Structure: Isometric (cubic), Cleavage: None (conchoidal fracture), Specific Gravity: 3.5-4.3
- Hardness
- 6
Identified More mineral →
Explore Garnet (Tumbled) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7.5, Color: Deep reddish-brown to dark burgundy, Luster: Vitreous to resinous, Crystal Structure: Isometric (cubic), Cleavage: None (conchoidal fracture), Specific Gravity: 3.5-4.3
Formation & geological history
Formed under high temperatures and pressures during regional metamorphism of shale, schist, or gneiss, as well as in igneous rocks like granites and pegmatites.
Uses & applications
Used in jewelry, as an industrial abrasive (sandblasting, waterjet cutting), and widely collected as tumbled gemstones and healing stones.
Geological facts
Garnet is the official birthstone for January and has been used as a gemstone since the Bronze Age. The name comes from the Latin word 'granatus', meaning seed, due to its resemblance to pomegranate seeds.
Field identification & locations
Identified by its deep red hue, high density, and hardness. Common locations include India, Madagascar, Brazil, Sri Lanka, and parts of North America.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock