Jeremejevite
Mile 72, Cape Cross area, Arandis Constituency, Erongo Region, Namibia
0.55 carats
© irocks.com
Jeremejevite forms pale blue-green, cornflower-blue, brown or colourless transparent crystals, usually zoned in light hues.
Most gem material comes from Namibia. Jeremejevite produces attractive colourless, yellowish and blue faceted stones which rarely exceed 1 carat in weight.
Jeremejevite 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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Jeremejevite Gemstones by Size
This table shows distribution of Jeremejevite 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:0.14 cts
Heaviest:3.45 cts
Average:0.72 cts
Total photos:22
Do you have a larger Jeremejevite? Why not upload a photo?
| General Information | ||||||||||||||||||||||||||||||
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| Chemical Formula |
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| Physical Properties of Jeremejevite | ||||||||||||||||||||||||||||||
| Mohs Hardness | 6.5 to 7.5, Gemstones of the world (2001) More from other references | |||||||||||||||||||||||||||||
| Specific Gravity | 3.28 to 3.31, Gemstones of the world (2001) More from other references | |||||||||||||||||||||||||||||
| Cleavage Quality | None, Gemstones (2009) | |||||||||||||||||||||||||||||
| Fracture | Conchoidal, Gemstones (2009) | |||||||||||||||||||||||||||||
| Optical Properties of Jeremejevite | ||||||||||||||||||||||||||||||
| Refractive Index | 1.638 to 1.650, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||||||
| Optical Character | Uniaxial/-, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||||||
| Birefringence | 0.007 to 0.009, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||||||
| Pleochroism | Dichroism: colorless - body color, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||||||
| Dispersion | Distinct, Gemstones (2009) | |||||||||||||||||||||||||||||
| Colour | ||||||||||||||||||||||||||||||
| Colour (General) | Colourless, yellow, blue, violet, Gemmological Tables (2004) More from other references | |||||||||||||||||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | |||||||||||||||||||||||||||||
| Lustre | Vitreous, Gemstones (2009) | |||||||||||||||||||||||||||||
| Fluorescence & other light emissions | ||||||||||||||||||||||||||||||
| Fluorescence (General) | Inert, Blue Chart Gem Identification (2010) | |||||||||||||||||||||||||||||
| Crystallography of Jeremejevite | ||||||||||||||||||||||||||||||
| Crystal System | Hexagonal, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||||||||||
| Habit | Hexagonal prisms, sometimes tapered with vicinal forms and with pyramidal terminations, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||||||||||||||
| Geological Environment | ||||||||||||||||||||||||||||||
| Where found: | A rare late hydrothermal mineral formed in granite pegmatites, Gems, Sixth Edition (2006) | |||||||||||||||||||||||||||||
| Inclusions in Jeremejevite | ||||||||||||||||||||||||||||||
| Growth lines and zoning, "fingerprints" (partially healed fractures with fluid-filled channels) - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 4 | ||||||||||||||||||||||||||||||
| Further Information | ||||||||||||||||||||||||||||||
| Mineral information: | Jeremejevite information at mindat.org | |||||||||||||||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||||||||||||||
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