Villiaumite
Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
0.93 carats
© Rarestone.com
Villiaumite forms translucent to transparent carmine-red to lavender-pink granular masses and rarely cubic crystals. Villiaumite is likely to be soluble in hot water.
Villiaumite has been faceted, but the cut stones are usually very small.
Villiaumite 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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| General Information | ||||||||||||
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| Chemical Formula |
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| Physical Properties of Villiaumite | ||||||||||||
| Mohs Hardness | 2, Gemmological Tables (2004) More from other references | |||||||||||
| Specific Gravity | 2.79, Gemmological Tables (2004) More from other references | |||||||||||
| Tenacity | Brittle, Handbook of mineralogy (2001) | |||||||||||
| Cleavage Quality | Distinct, Gemmological Tables (2004) More from other references | |||||||||||
| Optical Properties of Villiaumite | ||||||||||||
| Refractive Index | 1.328 to 1.332, Gemmological Tables (2004) More from other references | |||||||||||
| Optical Character | Isotropic, Gemmological Tables (2004) More from other references | |||||||||||
| Pleochroism | Yellow to pink/deep carmine, Gems, Sixth Edition (2006) | |||||||||||
| Colour | ||||||||||||
| Colour (General) | Red, Gemmological Tables (2004) More from other references | |||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | |||||||||||
| Lustre | Vitreous, Handbook of mineralogy (2001) | |||||||||||
| Fluorescence & other light emissions | ||||||||||||
| Fluorescence (General) | Dark red to orange and yellow fluorescence under SW and LW UV, Handbook of mineralogy (2001) | |||||||||||
| Fluorescence (Short Wave UV) | May show weak red fluorescence, Gems, Sixth Edition (2006) | |||||||||||
| Crystallography of Villiaumite | ||||||||||||
| Crystal System | Isometric, Gemmological Tables (2004) More from other references | |||||||||||
| Habit | Granular masses, Gems, Sixth Edition (2006) More from other references | |||||||||||
| Geological Environment | ||||||||||||
| Where found: | Villiaumite occurs in nepheline syenite and nepheline syenite pegmatites., Gems, Sixth Edition (2006) More from other references | |||||||||||
| Further Information | ||||||||||||
| Mineral information: | Villiaumite information at mindat.org | |||||||||||
| Significant Gem Localities | ||||||||||||
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