Haüyne

Big Photo

Lapis lazuli
Afghanistan
444.55 carats
© gemselect.com

Haüyne was first described in 1807 from samples discovered in Vesuvian lavas in Monte Somma, Italy. It was named after René Just Haüy, French crystallographer.

The crystals are transparent to translucent, with a vitreous to greasy luster. The colour is usually bright blue, but it can also be white, gray, yellow, green and pink.

Fine crystal specimens come from the Eifel Mountains, Germany.

Lazurite, the primary constituent of lapis lazuli, is a sulfide-rich variety of Haüyne.

Haüyne Gemstones by Colour

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

Haüyne Gemstones by Size

This table shows distribution of Haüyne 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:0.03 cts
Heaviest:444.55 cts
Average:18.93 cts
Total photos:70
Do you have a larger Haüyne? Why not upload a photo?
0.03ct to 44.48ct44.48ct to 88.93ct88.93ct to 133.39ct133.39ct to 177.84ct177.84ct to 222.29ct222.29ct to 266.74ct266.74ct to 311.19ct311.19ct to 355.65ct355.65ct to 400.10ct400.10ct to 444.55ct
General Information
Varieties/Types:
Other Names/Trade Names:
Chemical Formula
(Na,Ca)
 
4-8
Al
 
6
Si
 
6
(O,S)
 
24
(SO
 
4
,Cl)
 
1-2
Michael O’Donoghue, Gems, Sixth Edition (2006)
More from other references
Photos of natural/un-cut material from mindat.org
Physical Properties of Haüyne
Mohs Hardness5.5 to 6
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Specific Gravity2.40 to 2.50
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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TenacityBrittle
Arthur Thomas, Gemstones (2009)
Cleavage QualityPerfect
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Haüyne
Refractive Index1.490 to 1.510
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Optical CharacterIsotropic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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DispersionNil
Arthur Thomas, Gemstones (2009)
Colour
Colour (General)Lazure blue, green-blue, blue-white.
Walter Schumann, Gemstones of the world (2001)
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TransparencyTransparent,Translucent,Opaque
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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LustreVitreous
Walter Schumann, Gemstones of the world (2001)
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Fluorescence & other light emissions
Fluorescence (General)May fluoresce orangy red (weaker to SW)
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Fluorescence (Long-Wave UV)Some material has been reported to show an orange-red fluorescence
Michael O’Donoghue, Gems, Sixth Edition (2006)
Crystallography of Haüyne
Crystal SystemIsometric
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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HabitDodecahedral or pseudooctahedral
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Geological Environment
Where found:Haüyne occurs in alkaline nepheline or leucite-rich igneous rocks
Michael O’Donoghue, Gems, Sixth Edition (2006)
Inclusions in Haüyne
Healing cracks, crystal inclusions - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 2
Further Information
Mineral information:Haüyne information at mindat.org
Significant Gem Localities
Afghanistan
 
  • Badakhshan Province (Badakshan Province; Badahsan Province)
    • Khash & Kuran Wa Munjan Districts
      • Koksha Valley (Kokscha Valley; Kokcha Valley)
        • Sar-e Sang (Sar Sang; Sary Sang)
[Lazurite var: Lapis lazuli] Bowersox and Chamberlin (1995)
Chile
 
  • Coquimbo Region
    • Limarí Province
      • Ovalle
[Lazurite var: Lapis lazuli] Ward (1996)
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Mendig
    • Vulkaneifel
      • Hillesheim
Myanmar
 
  • Mandalay Region
    • Pyin-Oo-Lwin District
[Lazurite var: Lapis lazuli]
        • Bernardmyo
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
        • Chaung-gyi
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
        • Kyatpyin North
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
        • Kyauk-Pyat-That
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
        • Marble Ark
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
        • Mogok Valley
          • Dattaw-taung (Dattaw hill)
            • Dattaw-mid
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
[Lazurite var: Lapis lazuli] Ted Themelis (2008) Gems & mines of Mogok
        • Pein-Pyit (Painpyit; Pyan Pyit)
[Lazurite] Ted Themelis (2008) Gems & mines of Mogok
Russia
 
  • Irkutsk Oblast
[Lazurite var: Lapis lazuli] Spiridonov (1998)
Tajikistan
 
  • Viloyati Mukhtori Gorno-Badakhshan (Viloyati Badakhshoni Kuni)
[Lazurite var: Lapis lazuli] Spiridonov (1998)
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