Blue Beryl (Maxixe)
Deep blue beryl; color fades in daylight. Originally (since 1917) it came only from the Maxixe Mine in Minas Gerais (Brazil). Since the 1970s it has been more widely available, but obviously made more beautiful through irradiation, but the color does not last.
| General Information | ||||||||||||||||||
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| A variety or type of: | Beryl | |||||||||||||||||
| Chemical Formula |
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| Physical Properties of Blue Beryl (Maxixe) | ||||||||||||||||||
| Mohs Hardness | 7.5 to 8, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Specific Gravity | 2.60 to 2.90, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Fracture | Conchoidal, Gemstones (2009) | |||||||||||||||||
| Optical Properties of Blue Beryl (Maxixe) | ||||||||||||||||||
| Refractive Index | 1.560 to 1.604, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Optical Character | Uniaxial/-, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Birefringence | 0.003 to 0.010, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Colour | ||||||||||||||||||
| Colour (General) | Blue, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Transparency | Transparent,Translucent, Gemmological Tables (2004) | |||||||||||||||||
| Lustre | Vitreous, Gemstones (2009) | |||||||||||||||||
| Crystallography of Blue Beryl (Maxixe) | ||||||||||||||||||
| Crystal System | Hexagonal, Blue Chart Gem Identification (2010) | |||||||||||||||||
| Habit | Prismatic, Gemstones (2009) | |||||||||||||||||
| Further Information | ||||||||||||||||||
| Mineral information: | Blue Beryl (Maxixe) information at mindat.org | |||||||||||||||||