Musgravite
Tunduru, Tunduru District, Ruvuma Region, Tanzania
0.44 carats
© Mineral Classics
The closely-related Magnesiotaaffeite, which crystallizes in the hexagonal system, is known in mineralogy as Magnesiotaaffeite-2N’2S. Together, they are both part of the Taaffeite group.
Musgravite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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| General Information | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Taaffeite | |||||||||
| Other Names/Trade Names: | ||||||||||
| Chemical Formula |
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| Physical Properties of Musgravite | ||||||||||
| Specific Gravity | 3.62 to 3.68, Gemmological Tables (2004) | |||||||||
| Optical Properties of Musgravite | ||||||||||
| Refractive Index | 1.719 to 1.739, Gemmological Tables (2004) | |||||||||
| Optical Character | Uniaxial, Gemmological Tables (2004) | |||||||||
| Birefringence | 0.014 to 0.016, Gemmological Tables (2004) | |||||||||
| Colour | ||||||||||
| Colour (General) | Gray-green, green, Gemmological Tables (2004) | |||||||||
| Transparency | Transparent, Gemmological Tables (2004) | |||||||||
| Crystallography of Musgravite | ||||||||||
| Crystal System | Trigonal, Gemmological Tables (2004) | |||||||||
| Further Information | ||||||||||
| Mineral information: | Musgravite information at mindat.org | |||||||||