|
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 |
Coeruleite |
1.6 |
|
|
|
2.12 |
2.12 |
blue |
|
8.27 ct, spot RI, cabochon, treated (resin) |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2013 62/1-2, Jun, p32 |
Coeruleite |
1.6 |
|
|
|
2.7 |
2.7 |
blue |
Bolivia |
aggregate |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 1978 N°2, p |
Coeruleite |
|
|
|
|
2.69 |
2.69 |
intense blue with dark brown, white and green areas |
Mina El Guanaco, Taltal area, Atofagasta, Chili |
1.45ct, opaque |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2017 Vol35, N°5, p380 |
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 |
Coeruleite |
1.59 |
1.63 |
|
|
2.69 |
2.81 |
|
|
|
|
|
|
Gemmo.eu 2013 |
Coeruleite |
1.6 |
1.6 |
|
|
2.7 |
2.8 |
|
|
|
|
|
|
http://www.geminterest.com |
Coeruleite |
1.6 |
1.6 |
|
|
2.68 |
2.72 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Coeruleite |
1.6 |
1.6 |
|
|
2.7 |
2.8 |
|
|
|
|
|
|
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Coeruleite |
1.6 |
1.6 |
|
|
2.7 |
2.7 |
|
|
|
|
|
|
Gemmological Tables, Ulrich Henn,
2004 |
Coeruleite |
1.6 |
|
|
|
2.7 |
2.8 |
|
|
|
|
|
|
http://www.gemmology.be |
Coeruleite |
1.6 |
1.6 |
|
|
2.7 |
2.8 |
|
|
|
|
|
|
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Coeruleite |
1.6 |
1.6 |
|
|
2.58 |
2.58 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
Coeruleite |
1.6 |
1.6 |
|
|
2.7 |
2.8 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Coeruleite |
1.6 |
1.6 |
|
|
2.58 |
2.8 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)
Stone |
Colour |
Locality |
Reference |
Al2O3 |
CuO |
H2O |
As2O3 |
|
Coeruleite |
blue |
|
|
The Journal of Gemmology, 1978, N°2, p88 |
26.9 |
11.8 |
23.3 |
38 |