|
INVESTIGATIONS
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Locality |
Info |
nx min |
nx max |
ny min |
ny max |
nz min |
nz max |
Spectrum |
UVS |
UVL |
Reference |
Hypersthene |
1.67 |
1.68 |
0.01 |
0.01 |
3.34 |
3.34 |
dark orangy
brown |
Mysore, Karnataka,
India |
6.47ct, biaxial
- |
|
|
|
|
|
|
broad absorption below 420 and
between 550-555, lines at 435, 451, 460, 473, 485,
508nm |
|
|
GIA Gem Database
34034 |
Hypersthene |
1.69 |
1.703 |
0.013 |
0.013 |
3.44 |
3.44 |
brown,
opaque |
Sri Lanka |
optical effect: golden-brown
wavy zones due to lamellar twinning; 15.29 %
FeO |
1.690 |
1.690 |
1.700 |
1.700 |
1.703 |
1.703 |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2010 Jun,
p51-54 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
nx min |
nx
max |
ny min |
ny max |
nz min |
nz max |
Reference |
Hypersthene |
1.67 |
1.695 |
0.01 |
0.02 |
3.3 |
3.5 |
1.670 |
1.680 |
|
|
1.675 |
1.695 |
Tabellen zur Edelstein-Bestimmung, Pschichholz
FGA, 1975
|
Hypersthene |
1.67 |
1.73 |
0.01 |
0.02 |
3.4 |
3.5 |
|
|
|
|
|
|
Gems, R Webster, 5th edition
1994
|
Hypersthene |
1.673 |
1.731 |
0.01 |
0.016 |
3.4 |
3.5 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
Hypersthene |
1.685 |
1.772 |
0.015 |
0.017 |
3.43 |
3.9 |
1.685 |
1.755 |
|
|
1.703 |
1.772 |
Tables of Gemstone
Identification, Roger Dedeyn, Ivo Quintens, 2007
|
Hypersthene |
1.686 |
1.772 |
0.015 |
0.017 |
3.43 |
3.9 |
1.686 |
1.755 |
|
|
1.703 |
1.772 |
http://www.geminterest.com
|
Hypersthene |
1.686 |
1.772 |
0.01 |
0.016 |
3.4 |
3.5 |
1.686 |
1.755 |
|
|
1.703 |
1.772 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
Hypersthene |
1.686 |
1.725 |
0.013 |
0.015 |
3.44 |
3.58 |
1.686 |
1.710 |
1.695 |
1.722 |
1.699 |
1.725 |
Gemmological Tables, Ulrich Henn, 2004
|
Hypersthene |
1.686 |
1.772 |
0.016 |
0.017 |
3.43 |
3.9 |
|
|
|
|
|
|
http://www.gemmology.be
|
Hypersthene |
1.686 |
1.772 |
0.017 |
0.017 |
3.43 |
3.9 |
1.686 |
1.755 |
|
|
1.703 |
1.772 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
Hypersthene |
1.686 |
1.772 |
0.008 |
0.011 |
3.43 |
3.9 |
|
|
|
|
|
|
Gemology Tools Professional 2010
|
Hypersthene |
|
|
0.012 |
0.015 |
3.3 |
3.4 |
|
|
|
|
|
|
John Sinkakas, Gemstone and
mineral data book,1972
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
Inclusion |
Stone |
Reference |
hematite |
Hypersthene |
Joel Arem, Color Encyclopedia
of Gemstones, 1987 |
goethite |
Hypersthene |
Joel Arem, Color Encyclopedia
of Gemstones, 1987 |
LOCALITIES
CHEMICAL DATA