Hackmanite
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
2.61 carats
© Rarestone.com
It was first discovered in cuttable qualities in 1991, in Quebec, Canada.
Hackmanite 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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Hackmanite Gemstones by Size
This table shows distribution of Hackmanite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.19 cts
Heaviest:8.44 cts
Average:1.51 cts
Total photos:27
Do you have a larger Hackmanite? Why not upload a photo?
| General Information | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Sodalite | |||||||||||||||||||||
| Chemical Formula |
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| Physical Properties of Hackmanite | ||||||||||||||||||||||
| Mohs Hardness | 5.5 to 6, Gemmological Tables (2004) | |||||||||||||||||||||
| Specific Gravity | 2.27 to 2.33, Gemmological Tables (2004) | |||||||||||||||||||||
| Tenacity | Brittle, Handbook of mineralogy (2001) | |||||||||||||||||||||
| Cleavage Quality | Poor, Gemstones (2009) | |||||||||||||||||||||
| Fracture | Uneven, Gemstones (2009) | |||||||||||||||||||||
| Light Sensitivity | Colour fades in light., Gemstones of the world (2001) | |||||||||||||||||||||
| Optical Properties of Hackmanite | ||||||||||||||||||||||
| Refractive Index | 1.483 to 1.487, Gemmological Tables (2004) | |||||||||||||||||||||
| Optical Character | Isotropic, Gemmological Tables (2004) | |||||||||||||||||||||
| Colour | ||||||||||||||||||||||
| Colour (General) | Pink, Gemmological Tables (2004) | |||||||||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) | |||||||||||||||||||||
| Lustre | Vitreous,Greasy, Gemstones (2009) | |||||||||||||||||||||
| Fluorescence & other light emissions | ||||||||||||||||||||||
| Fluorescence (General) | Pink to violet-red when exposed to UV, fades to yellow in visible light, Gemmological Tables (2004) | |||||||||||||||||||||
| Crystallography of Hackmanite | ||||||||||||||||||||||
| Crystal System | Isometric, Gemmological Tables (2004) | |||||||||||||||||||||
| Further Information | ||||||||||||||||||||||
| Mineral information: | Hackmanite information at mindat.org | |||||||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||||||
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