Bronzite

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India
12.35 carats

Bronzite is an iron-bearing variety of Enstatite from Austria. It has green-brown colour with bronze-like sub-metallic lustre. It was known long before Enstatite.

Bronzite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
General Information
A variety or type of:Enstatite
Chemical Formula
(Mg,Fe)
 
2
Si
 
2
O
 
6
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Physical Properties of Bronzite
Mohs Hardness5.5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Specific Gravity3.35 +/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Cleavage QualityDistinct
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical Properties of Bronzite
Refractive Index1.668 +/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Optical CharacterBiaxial
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Birefringence0.014 +/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Colour
Colour (General)(Greenish)-brown
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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TransparencyTransparent,Translucent,Opaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
LustreSubmetallic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Bronze-like
Crystallography of Bronzite
Crystal SystemOrthorhombic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Inclusions in Bronzite
Fibrous inclusions - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 4
Further Information
Mineral information:Bronzite information at mindat.org
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