Chemical Composition

Hessonite Gemstone (garnet) or Gomed is one of the various types of garnets. The Hessonite garnet also known as Gomed is also called the Cinnamon stone as it was first discovered in Sri Lanka a land known for its spices.

Composition of Hessonite Garnet Or Gomed Gemstone

The chemical composition of the hessonite stone (garnet) is calcium aluminum silicate (Ca3 Al 2 {SiO4}3). The specific gravity is 3.65 and the refractive index ranges between 1.742 and 1.748.

Identification of Hesonite Garnet or Gomed

Crystal system Cubic
Cleavage None, sometimes indistinct parting
Fracture Conchoidal to uneven
Mohs scale hardness 7
Specific gravity 3.64 to 3.69
Polish luster Vitreous
Optical properties Single refractive, often anomalous double refractive
Birefringence None
Pleochroism None