Cerussite
Tsumeb, Oshikoto Region, Namibia
7.32 carats
© Rarestone.com
Cerussite is usually transparent to translucent, colourless or white, sometimes has gray, brownish or greenish tint. The mineral occurs as compact granular masses, and sometimes in fibrous forms. Very bright crystals are often.
Cerussite is frequently twinned: elbow- or chevron-shaped twins, cyclic twins and reticulated twins. Three crystals are often twinned together to produce six-rayed stellate groups with the individual crystals crossing at a 60°angle.
Cerussite 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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Cerussite Gemstones by Size
This table shows distribution of Cerussite 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:3.71 cts
Heaviest:34.97 cts
Average:14.21 cts
Total photos:6
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| General Information | ||||||
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| Chemical Formula |
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| Physical Properties of Cerussite | ||||||
| Mohs Hardness | 3 to 3.5, Blue Chart Gem Identification (2010) More from other references | |||||
| Specific Gravity | 6.46 to 6.57, Blue Chart Gem Identification (2010) More from other references | |||||
| Tenacity | Brittle, Gemstones of the world (2001) Very brittleMore from other references | |||||
| Cleavage Quality | Good, Gemstones of the world (2001) More from other references | |||||
| Fracture | Uneven,Conchoidal, Gemstones of the world (2001) More from other references | |||||
| Heat Sensitivity | High, Gemstones (2009) | |||||
| Refractive Index | 1.803 to 2.078, Blue Chart Gem Identification (2010) More from other references | |||||
| Optical Character | Biaxial/-, Blue Chart Gem Identification (2010) More from other references | |||||
| Birefringence | 0.274, Blue Chart Gem Identification (2010) DoublingMore from other references | |||||
| Pleochroism | Absent, Gemstones of the world (2001) More from other references | |||||
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