Aegirine

Big Photo

Malawi
2.52 carats
© Rarestone.com

Aegirine is named after Aegir, a Scandinavian god of the sea.

Aegirine forms translucent to opaque dark to bright green, brown to black prismatic crystals.

Aegirine Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 

Aegirine Gemstones by Size

This table shows distribution of Aegirine gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.10 cts
Heaviest:2.52 cts
Average:1.68 cts
Total photos:3
Do you have a larger Aegirine? Why not upload a photo?
0.10ct to 0.34ct0.34ct to 0.58ct0.58ct to 0.83ct0.83ct to 1.07ct1.07ct to 1.31ct1.31ct to 1.55ct1.55ct to 1.79ct1.79ct to 2.04ct2.04ct to 2.28ct2.28ct to 2.52ct
General Information
Chemical Formula
(Na,Fe,Ca)Si
 
2
O
 
6
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Photos of natural/un-cut material from mindat.org
Physical Properties of Aegirine
Mohs Hardness6
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Specific Gravity3.5
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Cleavage QualityDistinct
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Optical Properties of Aegirine
Refractive Index1.760 to 1.805
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical CharacterBiaxial/-
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Birefringence0.045
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Colour
Colour (General)Greenish-black
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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TransparencyOpaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Crystallography of Aegirine
Crystal SystemMonoclinic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Geological Environment
Where found:Aegirine occurs in alkalic igneous rocks and in pegmatites.
Michael O’Donoghue, Gems, Sixth edition (2006)
Further Information
Mineral information:Aegirine information at mindat.org
Significant Gem Localities
Malawi
 
  • Southern Region
    • Zomba
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 377
Norway
 
  • Telemark
    • Porsgrunn
      • Langesundsfjorden
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 377
        • Håøya
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 377
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