|
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 |
|
Celestine |
1.620 |
1.630 |
0.01 |
0.01 |
3.98 |
3.98 |
colourless |
|
10.64ct |
|
|
|
|
|
|
|
inert |
weak yellowish |
ACAM Lab
321 |
|
Celestine |
1.621 |
1.632 |
0.011 |
0.011 |
4.01 |
4.01 |
light greyish violet |
Madagascar |
|
|
|
|
|
|
|
|
very weak green |
very weak green |
GIA Gem Database 35361 |
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 |
|
Celestine |
1.617 |
1.633 |
0.01 |
0.014 |
3.95 |
4.02 |
|
|
|
|
|
|
Gemmo.eu 2016 |
|
Celestine |
1.619 |
1.635 |
0.01 |
0.012 |
3.96 |
4 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Celestine |
1.619 |
1.635 |
0.009 |
0.012 |
3.96 |
4 |
1.619 |
1.625 |
|
|
1.631 |
1.635 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Celestine |
1.619 |
1.635 |
0.01 |
0.012 |
3.95 |
4 |
1.619 |
1.625 |
1.621 |
1.628 |
1.630 |
1.635 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Celestine |
1.619 |
1.635 |
0.009 |
0.012 |
3.97 |
4 |
1.619 |
1.625 |
1.624 |
1.624 |
1.631 |
1.635 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
|
Celestine |
1.619 |
1.635 |
0.01 |
0.012 |
3.97 |
4 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
|
Celestine |
1.619 |
1.635 |
0.009 |
0.012 |
3.97 |
4 |
1.619 |
1.625 |
1.622 |
1.624 |
1.630 |
1.635 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
|
Celestine |
1.621 |
1.635 |
0.008 |
0.012 |
3.9 |
4 |
1.621 |
1.625 |
1.622 |
1.624 |
1.630 |
1.635 |
http://www.geminterest.com |
|
Celestine |
1.621 |
1.635 |
0.009 |
0.012 |
3.97 |
4 |
|
|
|
|
|
|
http://www.gemmology.be |
|
Celestine |
1.622 |
1.635 |
0.009 |
0.12 |
3.97 |
4 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Celestine |
1.623 |
1.635 |
0.01 |
0.01 |
3.97 |
4 |
1.623 |
1.625 |
|
|
1.633 |
1.635 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Celestine |
1.625 |
1.635 |
0.009 |
0.01 |
3.97 |
3.99 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
CAUSE OF
COLOUR
|
Stone |
Colour |
Cause
of colour |
Reference |
|
Celestine |
blue |
colour centers |
American Mineralogist Volume 64, pages
160-168, 1979 |
|
Celestine |
orange |
The color in two specimens of orange celestite was correlated
to the presence of copper, probably as Cu+, in the order of 50 ppm |
American Mineralogist Volume 64, pages
160-168, 1979 |
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA