Charoite

Big Photo

Russia
28.22 carats
© gemselect.com

Charoite is named after Russian "chary" - charms or magic, alluding to the impression that the mineral's colour and iridescence impart. It was first found in Murun Complex, Yakutiya, Russia.

Charoite has deep violet to lilac colour, depending on accompanying minerals it can be white- or black-spotted or flamed.

Charoite produces attractive cabochons and ornaments.

Charoite Gemstones by Colour

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

Charoite Gemstones by Size

This table shows distribution of Charoite 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:1.20 cts
Heaviest:49.57 cts
Average:20.67 cts
Total photos:14
Do you have a larger Charoite? Why not upload a photo?
1.20ct to 6.04ct6.04ct to 10.87ct10.87ct to 15.71ct15.71ct to 20.55ct20.55ct to 25.39ct25.39ct to 30.22ct30.22ct to 35.06ct35.06ct to 39.90ct39.90ct to 44.73ct44.73ct to 49.57ct
General Information
Chemical Formula
K(Ca,Na)
 
2
Si
 
4
O
 
10
(OH,F) · H
 
2
O
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Photos of natural/un-cut material from mindat.org
Physical Properties of Charoite
Mohs Hardness5 to 6
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Specific Gravity2.54 to 2.78
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Cleavage QualityFair
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Charoite
Refractive Index1.545 to 1.560
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Optical CharacterBiaxial/+
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Birefringence0.009
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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PleochroismNil
Arthur Thomas, Gemstones (2009)
DispersionNil
Arthur Thomas, Gemstones (2009)
Colour
Colour (General)Violet with white to black swirls
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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TransparencyTranslucent,Opaque
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Semi-translucent to opaqueMore from other references
LustreVitreous,Silky
Walter Schumann, Gemstones of the world (2001)
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Crystallography of Charoite
Crystal SystemMonoclinic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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HabitMassive
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Geological Environment
Where found:Charoite occurs in potassic feldspar metasomatites at the contact of nepheline and aegririne syenites with limestones.The combination of charoite with some of its associated minerals makes attractive ornaments.
Michael O’Donoghue, Gems, Sixth Edition (2006)
Inclusions in Charoite
Flame-like inclusions. The common "charoite" is a rock composed of various minerals (charoite, feldspar, augite, etc) - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 6
Forms an attractive ornametal material together with greenish-black aegirine-augite, orange-gray feldspar (microcline) and orange tinaksite - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 9
Further Information
Mineral information:Charoite information at mindat.org
Significant Gem Localities
Russia
 
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
        • Chara and Tokko Rivers Confluence
Konev et al. (1993)
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