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.
The 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 Hessonite Garnet or Gomed |
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| 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 |