Rock Identifier
Garnet (Pyrope or Almandine) (Silicate (X3Y2Si3O12)) — mineral
mineral

Garnet (Pyrope or Almandine)

Silicate (X3Y2Si3O12)

Hardness: 6.5-7.5 (Mohs); Color: Deep red to reddish-brown; Luster: Vitreous; Crystal Structure: Isometric; Specific Gravity: 3.5-4.3

Hardness
6
Color
Deep red to reddish-brown
Luster
Vitreous
Identified More mineral

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Physical properties

Hardness: 6.5-7.5 (Mohs); Color: Deep red to reddish-brown; Luster: Vitreous; Crystal Structure: Isometric; Specific Gravity: 3.5-4.3

Formation & geological history

Formed under high temperatures and pressures in metamorphic rocks like schist or gneiss, or as deep-seated igneous minerals. They are found across various geological ages.

Uses & applications

Primary use as a gemstone in jewelry (ring settings as shown); also used in industry as an abrasive for waterjet cutting and sandblasting.

Geological facts

Garnet is the birthstone for January. The name comes from the Latin 'granatus' meaning grain, likely referring to the red seeds of a pomegranate.

Field identification & locations

Identify by deep red color, lack of cleavage, and dodecahedral crystal habits in the field. Found globally, with major deposits in India, Africa, and the USA.