Spessartite
is an orange to orange-red form of the gemstone Garnet. The term Garnet describes a group name for several closely related minerals that form important gemstones, and Spessartite is an individual member mineral of the Garnet group. Spessartite is synonymous with Spessartine, though in the gem trade the name Spessartite is more frequently used, and in the mineral trade the term Spessartine is more frequently used. The term Spessartite is often identified together with the Garnet name and called Spessartine Garnet in the trade.
| Chemical Formula | Mn3Al2Si3O12 |
| Color | Red, Yellow, Orange, Brown, Pink |
| Hardness | 7 |
| Crystal System | Isometric |
| Refractive Index | 1.795Â -Â 1.815 |
| SG | 4.1Â -Â 4.2 |
| Transparency | Transparent |
| Double Refraction | None |
| Luster | Adamantine |
| Cleavage | None |
| Mineral Class | Spessartine (Garnet) |
is an orange to orange-red form of the gemstone Garnet. The term Garnet describes a group name for several closely related minerals that form important gemstones, and Spessartite is an individual member mineral of the Garnet group. Spessartite is synonymous with Spessartine, though in the gem trade the name Spessartite is more frequently used, and in the mineral trade the term Spessartine is more frequently used. The term Spessartite is often identified together with the Garnet name and called Spessartine Garnet in the trade.
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