Magnesite 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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Magnesite Gemstones by Size
This table shows distribution of Magnesite 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:3.51 cts
Heaviest:17.75 cts
Average:7.89 cts
Total photos:5
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| General Information | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chemical Formula |
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| Magnesite Treatments | |||||||||
| Dyed to imitate lapis, turquoise (chelsea: common reddish), coral. Acetone test - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 8 | |||||||||
| Physical Properties of Magnesite | |||||||||
| Mohs Hardness | 4 to 4.5, Gemmological Tables (2004) More from other references | ||||||||
| Specific Gravity | 2.92 to 3.12, Blue Chart Gem Identification (2010) More from other references | ||||||||
| Cleavage Quality | Perfect, Gemmological Tables (2004) More from other references | ||||||||
| Fracture | Conchoidal, Gemstones (2009) | ||||||||
| Optical Properties of Magnesite | |||||||||
| Refractive Index | 1.509 to 1.720, Blue Chart Gem Identification (2010) More from other references | ||||||||
| Optical Character | Uniaxial/-, Blue Chart Gem Identification (2010) More from other references | ||||||||
| Birefringence | 0.191 to 0.199, Gemmological Tables (2004) More from other references | ||||||||
| Pleochroism | Nil, Gemstones (2009) | ||||||||
| Dispersion | Nil, Gemstones (2009) | ||||||||
| Colour | |||||||||
| Colour (General) | White, yellow, brown, black, colourless, Gemmological Tables (2004) More from other references | ||||||||
| Transparency | Translucent,Opaque, Gemmological Tables (2004) More from other references | ||||||||
| Lustre | Vitreous,Silky, Gemstones (2009) | ||||||||
| Fluorescence & other light emissions | |||||||||
| Fluorescence (General) | Blue, green, white common, Blue Chart Gem Identification (2010) | ||||||||
| Fluorescence (Short Wave UV) | Blue green or white fluorescence may be seen with greenish phosphorescence, Gems, Sixth Edition (2006) | ||||||||
| Phosphorescence | Greenish, Blue Chart Gem Identification (2010) | ||||||||
| Crystallography of Magnesite | |||||||||
| Crystal System | Trigonal, Blue Chart Gem Identification (2010) More from other references | ||||||||
| Habit | Massive, Gems, Sixth Edition (2006) More from other references | ||||||||
| Geological Environment | |||||||||
| Where found: | Magnesite occurs as a primary mineral in igneous or sedimentary rocks or may be formed by the metamorphism or alteration of serpentine and peridotite., Gems, Sixth Edition (2006) | ||||||||
| Further Information | |||||||||
| Mineral information: | Magnesite information at mindat.org | ||||||||
| Significant Gem Localities | |||||||||
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