|
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 |
Anorthite |
1.57 |
1.57 |
|
|
2.75 |
2.75 |
bright mottled green with dark green and brown inclusions |
|
cabochon, spot RI |
|
|
|
|
|
|
|
reddish |
|
Gems & Gemology 1980 Spring,
p269-270 |
Anorthite |
1.575 |
1.588 |
0.013 |
0.013 |
2.77 |
2.77 |
colourless to pale yellowish |
Fugoppe, Yoichi County, Hokkaido, Japan |
2.71ct |
1.575 |
1.575 |
1.583 |
1.583 |
1.588 |
1.588 |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1998 Jun, p62-63 |
Anorthite |
1.575 |
1.589 |
0.014 |
0.014 |
|
|
extremely pale yellow |
Miyake Island, Japan |
0.43ct |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2019 36 (6), p 496 |
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 |
Anorthite |
1.517 |
1.535 |
0.005 |
0.009 |
2.55 |
2.63 |
|
|
|
|
|
|
Gemmo.eu 2013 |
Anorthite |
1.573 |
1.59 |
0.013 |
0.013 |
2.75 |
2.77 |
1.573 |
1.577 |
1.580 |
1.585 |
1.585 |
1.590 |
http://www.geminterest.com |
Anorthite |
1.573 |
1.59 |
0.013 |
0.013 |
2.75 |
2.77 |
1.573 |
1.577 |
1.580 |
1.585 |
1.585 |
1.590 |
Tables of Gemstone Identification, Roger Dedeyn, Ivo
Quintens, 2007 |
Anorthite |
1.575 |
1.588 |
0.013 |
0.013 |
2.76 |
2.76 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Anorthite |
1.575 |
1.589 |
0.013 |
0.013 |
2.74 |
2.77 |
1.575 |
1.577 |
|
|
1.588 |
1.589 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Anorthite |
1.575 |
1.588 |
0.013 |
0.013 |
2.77 |
2.77 |
1.575 |
1.575 |
1.583 |
1.583 |
1.588 |
1.588 |
Gemmological Tables, Ulrich Henn,
2004 |
Anorthite |
1.577 |
1.59 |
0.013 |
0.013 |
2.75 |
2.77 |
1.577 |
1.577 |
1.585 |
1.585 |
1.590 |
1.590 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Anorthite |
1.577 |
1.59 |
0.013 |
0.013 |
2.75 |
2.77 |
|
|
|
|
|
|
http://www.gemmology.be |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
Inclusion |
Stone |
Reference |
pargasite |
Anorthite |
The Journal of Gemmology 2003, Vol 28, N°7, p386 |
ruby |
Anorthite |
The Journal of Gemmology 2003, Vol 28, N°7, p386 |
spinel |
Anorthite |
The Journal of Gemmology 2003, Vol 28, N°7, p386 |
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Anorthite |
|
|
Hokkaido |
Japan |
Gemmologie , Dec 2001 p186 |
Anorthite |
|
Great Sitkin Island |
Alaska |
USA |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |