| General Information | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Diopside | |||||||||
| Other Names/Trade Names: | ||||||||||
| Chemical Formula |
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| Physical Properties of Chrome-Diopside | ||||||||||
| Mohs Hardness | 5 to 6, Blue Chart Gem Identification (2010) | |||||||||
| Specific Gravity | 3.22 to 3.40, Blue Chart Gem Identification (2010) | |||||||||
| Cleavage Quality | Distinct, Gemmological Tables (2004) | |||||||||
| Fracture | Conchoidal, Gemstones (2009) | |||||||||
| Optical Properties of Chrome-Diopside | ||||||||||
| Refractive Index | 1.668 to 1.703, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Optical Character | Biaxial/+, Blue Chart Gem Identification (2010) | |||||||||
| Birefringence | 0.024 to 0.030, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Colour | ||||||||||
| Colour (General) | Emerald green, Blue Chart Gem Identification (2010) | |||||||||
| Colour (Chelsea Filter) | Reddish, Blue Chart Gem Identification (2010) | |||||||||
| Causes of Colour | Green, Cr3+ in octahedral coordination, Pragmatic Spectroscopy For Gemologists (2011) | |||||||||
| Transparency | Transparent, Gems, Sixth Edition (2006) | |||||||||
| Lustre | Vitreous, Gemstones (2009) | |||||||||
| Crystallography of Chrome-Diopside | ||||||||||
| Crystal System | Monoclinic, Blue Chart Gem Identification (2010) | |||||||||
| Habit | Prismatic, massive, Gemstones (2009) | |||||||||
| Geological Environment | ||||||||||
| Where found: | Kimberlites and apoultramafic metasomatites Xenoliths in alkali basalts., Geology of gems (2003) | |||||||||
| Further Information | ||||||||||
| Mineral information: | Chrome-Diopside information at mindat.org | |||||||||
| Significant Gem Localities | ||||||||||
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