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Pezzottaite

Big Photo

Madagascar
1.43 carats
© Palagems

Pezzottaite Gemstones by Colour

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

Pezzottaite Gemstones by Size

This table shows distribution of Pezzottaite 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:1.43 cts
Heaviest:1.78 cts
Average:1.60 cts
Total photos:2
Do you have a larger Pezzottaite? Why not upload a photo?
1.43ct to 1.46ct1.46ct to 1.50ct1.50ct to 1.54ct1.54ct to 1.57ct1.57ct to 1.61ct1.61ct to 1.64ct1.64ct to 1.68ct1.68ct to 1.71ct1.71ct to 1.74ct1.75ct to 1.78ct
General Information
Chemical Formula
(Be,Cs)
 
3
Al
 
2
Si
 
6
O
 
18
· 0.5H
 
2
O
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Physical Properties of Pezzottaite
Mohs Hardness7.5 to 8
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Specific Gravity2.90 to 3.14
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
TenacityBrittle
Arthur Thomas, Gemstones (2009)
Cleavage QualityImperfect
Arthur Thomas, Gemstones (2009)
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Pezzottaite
Refractive Index1.598 to 1.620
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Optical CharacterUniaxial/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Birefringence0.007 to 0.011
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
PleochroismStrong: pinkish-orange - purplish-pink
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
ChatoyancyYes
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Colour
Colour (General)Rose-red, pink
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
Colour (Chelsea Filter)Faint pink-(orangy)
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
TransparencyTransparent,Translucent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
LustreVitreous
Arthur Thomas, Gemstones (2009)
Fluorescence & other light emissions
Fluorescence (General)Mostly inert
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Crystallography of Pezzottaite
Crystal SystemTrigonal
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
HabitTabular
Arthur Thomas, Gemstones (2009)
Inclusions in Pezzottaite
Growth tubes, fractures, "fingerprints", fluid inclusions - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 5
Further Information
Mineral information:Pezzottaite information at mindat.org
Significant Gem Localities
Afghanistan
 
  • Kunar
    • Dara-e-Pech District
Herb Obodda
  • Nuristan
    • Parun pegmatite field
Lapis Extra (English) No. 7 (2005) p12
Madagascar
 
  • Amoron'i Mania
    • Ambatofinandrahana
      • Mandrosonoro
        • Ambatovita
Laurs, B. L. et al. (2003): Pezzottaite from Ambatovita, Madagaascar: A new Gem mineral. Gems & Gemology 39 (4): 284-301
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