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Ekanite

Big Photo

Sri Lanka
0.86 carats
© Rarestone.com

Ekanite Gemstones by Colour

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

Ekanite Gemstones by Size

This table shows distribution of Ekanite 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:0.86 cts
Heaviest:3.51 cts
Average:2.19 cts
Total photos:2
Do you have a larger Ekanite? Why not upload a photo?
0.86ct to 1.13ct1.13ct to 1.39ct1.39ct to 1.66ct1.66ct to 1.92ct1.92ct to 2.19ct2.19ct to 2.45ct2.45ct to 2.72ct2.72ct to 2.98ct2.98ct to 3.25ct3.25ct to 3.51ct
General Information
Chemical Formula
Ca
 
2
ThSi
 
8
O
 
20
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Physical Properties of Ekanite
Mohs Hardness6 to 6.5
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Specific Gravity3.28 to 3.32
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Cleavage QualityDistinct
Arthur Thomas, Gemstones (2009)
FractureUneven
Arthur Thomas, Gemstones (2009)
Optical Properties of Ekanite
Refractive Index1.593 to 1.596
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Optical CharacterUniaxial/-
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Birefringence0.001
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Chatoyancy(Rare) star 4
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Colour
Colour (General)Green, yellow-green, brownish
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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TransparencyTransparent,Translucent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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LustreVitreous
Arthur Thomas, Gemstones (2009)
Crystallography of Ekanite
Crystal SystemTetragonal
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Metamict, originally tetragonalMore from other references
HabitPoorly formed prismatic crystals
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Inclusions in Ekanite
Black thorite crystals with radiation halos - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 5
Further Information
Mineral information:Ekanite information at mindat.org
Significant Gem Localities
Canada
 
  • Yukon
    • Dawson mining district
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 407
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
      • Ratnapura
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 407
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