Difference between revisions of "Goshenite"

From The Gemology Project
Jump to: navigation, search
("localities")
 
Line 1: Line 1:
 
{{goshenite}}
 
{{goshenite}}
 +
[[File:Béryl_var._goshénite_1_(Chine)_.jpg|left|thumb|500px| Colorless Goshenite<br /> Xuebaoding, Pingwu, Sichuan Province, China]]
 +
<br clear="all">
  
 
Goshenite is the colorless variety of [[beryl]] and is named after Goshen in Hampshire County, Massachusetts, USA (one of the localities where this gem is found).
 
Goshenite is the colorless variety of [[beryl]] and is named after Goshen in Hampshire County, Massachusetts, USA (one of the localities where this gem is found).

Latest revision as of 19:40, 12 November 2012

Goshenite
Chemical composition Be3Al2(SiO3)6 Beryllium aluminum silicate
Crystal system Hexagonal
Habit Prismatic
Cleavage Poor, basal
Fracture Conchoidal to uneven
Hardness 7.5
Optic nature Uniaxial -
Refractive index 1.57 - 1.59
Birefringence 0.004 - 0.009
Dispersion Low, 0.014
Specific gravity 2.7 - 2.9
Lustre Vitreous
Pleochroism None
Colorless Goshenite
Xuebaoding, Pingwu, Sichuan Province, China


Goshenite is the colorless variety of beryl and is named after Goshen in Hampshire County, Massachusetts, USA (one of the localities where this gem is found).