Phosgenite
Sardinia, Italy
8.61 carats
© Mineral Classics
Phosgenite forms transparent to translucent colourless, white, yellowish, greenish, pinkish prismatic crystals with high adamantine lustre, which is caused by its lead content.
Facet-grade rough is rare.
Phosgenite 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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Phosgenite Gemstones by Size
This table shows distribution of Phosgenite 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:1.62 cts
Heaviest:17.81 cts
Average:8.20 cts
Total photos:5
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| General Information | ||||||||||||||||
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| Chemical Formula |
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| Physical Properties of Phosgenite | ||||||||||||||||
| Mohs Hardness | 2 to 3, Gemstones of the world (2001) More from other references | |||||||||||||||
| Specific Gravity | 6.13, Gemmological Tables (2004) More from other references | |||||||||||||||
| Cleavage Quality | Perfect, Gemmological Tables (2004) More from other references | |||||||||||||||
| Fracture | Conchoidal, Gemstones (2009) | |||||||||||||||
| Optical Properties of Phosgenite | ||||||||||||||||
| Refractive Index | 2.117 to 2.145, Gemmological Tables (2004) More from other references | |||||||||||||||
| Optical Character | Uniaxial/+, Gemmological Tables (2004) More from other references | |||||||||||||||
| Birefringence | 0.028, Gemmological Tables (2004) More from other references | |||||||||||||||
| Pleochroism | Weak, Gemstones (2009) | |||||||||||||||
| Dispersion | Strong, Gemstones (2009) | |||||||||||||||
| Colour | ||||||||||||||||
| Colour (General) | Colourless, white, yellowish, greenish., Gemstones of the world (2001) More from other references | |||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | |||||||||||||||
| Lustre | Adamantine,Greasy, Gemstones of the world (2001) More from other references | |||||||||||||||
| Fluorescence & other light emissions | ||||||||||||||||
| Fluorescence (General) | LW and SW: strong yellow with yellow phosphorescence, Gemmological Tables (2004) More from other references | |||||||||||||||
| Fluorescence (Long-Wave UV) | Yellow, Gemstones (2009) | |||||||||||||||
| Crystallography of Phosgenite | ||||||||||||||||
| Crystal System | Tetragonal, Gemmological Tables (2004) More from other references | |||||||||||||||
| Habit | Short prismatic to prismatic, Gems, Sixth Edition (2006) More from other references | |||||||||||||||
| Geological Environment | ||||||||||||||||
| Where found: | Phosgenite occurs from the alteration of galena in the oxidized zone of lead ore deposits., Gems, Sixth Edition (2006) | |||||||||||||||
| Further Information | ||||||||||||||||
| Mineral information: | Phosgenite information at mindat.org | |||||||||||||||
| Significant Gem Localities | ||||||||||||||||
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