Sulphur
Sulphur gets its name via Old French from Latin "sulphur", meaning "to burn".
Sulphur forms transparent to translucent yellow or brownish crystals, which are often well formed.
Sulphur is too fragile and very sensitive to heat to be used in jewelry. It is faceted for collectors' of rare gems.
Sulphur forms transparent to translucent yellow or brownish crystals, which are often well formed.
Sulphur is too fragile and very sensitive to heat to be used in jewelry. It is faceted for collectors' of rare gems.
| General Information | |||||||||||
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| Other Names/Trade Names: | |||||||||||
| Chemical Formula |
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| Physical Properties of Sulphur | |||||||||||
| Mohs Hardness | 1.5 to 2.5, Gemstones of the world (2001) | ||||||||||
| Specific Gravity | 2.05 to 2.08, Gemstones of the world (2001) | ||||||||||
| Heat Sensitivity | Extremely sensitive to heat, bursts when warmed in one's hand., Gemstones of the world (2001) | ||||||||||
| Optical Properties of Sulphur | |||||||||||
| Refractive Index | 1.958 to 2.245, Gems, Sixth edition (2006) | ||||||||||
| Optical Character | Biaxial/+, Gems, Sixth edition (2006) | ||||||||||
| Birefringence | 0.291, Gems, Sixth edition (2006) | ||||||||||
| Colour | |||||||||||
| Colour (General) | Yellow, brownish, Gemstones of the world (2001) | ||||||||||
| Transparency | Translucent, Gemstones of the world (2001) | ||||||||||
| Lustre | Adamantine, Gemstones of the world (2001) | ||||||||||
| Crystallography of Sulphur | |||||||||||
| Crystal System | Orthorhombic, Gemstones of the world (2001) | ||||||||||
| Habit | Dipyramidal, thick tabular crystals, Gems, Sixth edition (2006) | ||||||||||
| Geological Environment | |||||||||||
| Where found: | It is a sublimation product of volcanic fumaroles., Gems, Sixth edition (2006) | ||||||||||
| Further Information | |||||||||||
| Mineral information: | Sulphur information at mindat.org | ||||||||||
| Significant Gem Localities | |||||||||||
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