What is Garnet?


Garnet is a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives. It’s primarily found in Africa, Sri Lanka, and India. Garnet is often used as a gemstone and is a popular choice for jewelry due to its deep red color and spiritual significance.

Garnet is a deep red gemstone that belongs to a group of silicate minerals. Its rich color and lustrous appearance make it a popular choice for jewelry and decorative items. The stone is often used in rings, necklaces, and pendants.

Gemstone Properties

Chemical ClassificationInorganic - Silicate (Garnet group)
ColorGarnets come in a variety of colors, including red, brown, green, yellow, orange, pink, and even some blues.
StreakWhite to Brown
LusterVitreous to resinous.
TransparencyTransparent to translucent.
OccurrenceIndia, Sri Lanka, and the United States.
FormationGarnets typically form in metamorphic rocks under high temperatures and pressures.
DiaphaneityTransparent to translucent
CleavagePerfect in two directions
Mohs Hardness6.5 to 7.5.
Specific Gravity3.5 to 4.3, depending on the type of garnet.
Diagnostic PropertiesDodecahedral crystal habit, various colors.
Chemical CompositionX3Y2(SiO4)3 (Where X and Y are various metal ions)
PleochroismSome garnets, like almandine, exhibit pleochroism, showing different colors or depths of color when viewed from different angles.
Crystal SystemIsometric/Cubic (varies by type)
Optical PropertiesIsotropic (most varieties)
Refractive IndexVaries by type, e.g., Almandine: 1.760 - 1.790
BirefringenceVaries by type, e.g., Almandine: None (isotropic)
2V angleMeasured: 93°
Dispersion0.024 – relatively high, giving it good brilliance.