Goshenite

Big Photo

Brazil
4.28 carats
© Rarestone.com

Goshenite is a colorless variety of beryl, named after locality in Goshen, Massachusetts (USA).

Goshenite is used as imitation for diamond and emerald by applying silver or green metal foil to the cut stone.

The gem value of goshenite is relatively low.

Goshenite Gemstones by Colour

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

Goshenite Gemstones by Size

This table shows distribution of Goshenite 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:0.28 cts
Heaviest:20.76 cts
Average:4.64 cts
Total photos:12
Do you have a larger Goshenite? Why not upload a photo?
0.28ct to 2.33ct2.33ct to 4.38ct4.38ct to 6.42ct6.42ct to 8.47ct8.47ct to 10.52ct10.52ct to 12.57ct12.57ct to 14.62ct14.62ct to 16.66ct16.66ct to 18.71ct18.71ct to 20.76ct
General Information
A variety or type of:Beryl
Chemical Formula
Be
 
3
Al
 
2
Si
 
6
O
 
18
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Photos of natural/un-cut material from mindat.org
Goshenite Treatments
Goshenite can be colored yellow, green, pink, blue and in intermediate colors by irradiating it with high-energy particles. The resulting color depends on the content of Ca, Sc, Ti, V, Fe, and Co impurities. - Ibragimova, E. M. et al.(2009). "Correlations between admixtures and color centers created upon irradiation of natural beryl crystals".
Physical Properties of Goshenite
Mohs Hardness7.5 to 8
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity2.60 to 2.90
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Cleavage QualityIndistinct
Arthur Thomas, Gemstones (2009)
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Goshenite
Refractive Index1.562 to 1.615
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
Optical CharacterUniaxial/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Birefringence0.003 to 0.010
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Dispersion0.014
Michael O’Donoghue, Gems, Sixth Edition (2006)
Colour
Colour (General)Colourless
Gemdat.org, Management Team (2012)
TransparencyTransparent,Translucent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
LustreVitreous
Arthur Thomas, Gemstones (2009)
Crystallography of Goshenite
Crystal SystemHexagonal
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
HabitPrismatic
Arthur Thomas, Gemstones (2009)
Further Information
Mineral information:Goshenite information at mindat.org
Significant Gem Localities
Myanmar
 
  • Mandalay Region
    • Pyin-Oo-Lwin District
        • Bernardmyo
Ted Themelis (2008) Gems & mines of Mogok
        • Chaung-gyi
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
        • Kin (Guard Post)
Ted Themelis (2008) Gems & mines of Mogok
        • Kyatpyin North
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
        • Kyauk-Pyat-That
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
        • Mogok Valley
          • Dattaw-taung (Dattaw hill)
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
        • Pein-Pyit (Painpyit; Pyan Pyit)
Ted Themelis (2008) Gems & mines of Mogok
Pakistan
 
  • Gilgit-Baltistan
    • Astore District
      • Astor valley (Astore valley)
E.Ya.Kievlenko, Geology of gems, 2003, p. 110
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
      • Ratnapura
Econ Geol (1981) 76:733-738
USA
 
  • California
    • San Diego Co.
      • Mesa Grande District
        • Gem Hill
Fisher, J. 2002. Gem and rare-element pegmatites of southern California. Mineralogical Record, Volume 33, Number 5: pages 390-396, photographs.
      • Pala District
        • Pala
          • Chief Mountain
Osborn, P. (2005) Personal communication between Phillip Osborn of Hemet and Scott L. Ritchie of Temecula, California; description of beryl discovery on southwestern most Oceanview lode exposure; March.
      • Ramona District
        • Ramona
mindat.org
Copyright © Jolyon & Katya Ralph 1993-2019. Site Map. Locality, gem & photograph data are the copyright of the individuals who submitted them. For more information please contact the . Gemdat.org is an online information resource dedicated to providing free gemmological information to all.