|
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 |
|
Yugawaralite |
1.492 |
1.509 |
0.012 |
0.014 |
2.22 |
2.22 |
colourless |
Nasik,
India |
|
1.492 |
1.495 |
1.499 |
1.503 |
1.504 |
1.509 |
|
|
|
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1986 Jg 35, Nr 1-2,
p65-67 |
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 |
|
Yugawaralite |
1.49 |
1.509 |
0.011 |
0.014 |
2.21 |
2.22 |
1.490 |
1.495 |
1.497 |
1.503 |
1.501 |
1.509 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Yugawaralite |
1.49 |
1.509 |
0.011 |
0.014 |
2.19 |
2.22 |
1.490 |
1.495 |
1.497 |
1.503 |
1.501 |
1.509 |
Gems, R Webster, 5th edition 1994
|
|
Yugawaralite |
1.49 |
1.509 |
0.009 |
0.014 |
2.19 |
2.25 |
1.490 |
1.495 |
1.497 |
1.497 |
1.501 |
1.509 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
|
Yugawaralite |
1.492 |
1.509 |
0.009 |
0.014 |
2.23 |
2.25 |
1.492 |
1.495 |
|
|
1.501 |
1.509 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Yugawaralite |
1.492 |
1.504 |
0.009 |
0.009 |
2.2 |
2.25 |
1.492 |
1.496 |
1.497 |
1.499 |
1.502 |
1.504 |
http://www.geminterest.com
|
|
Yugawaralite |
1.492 |
1.509 |
0.011 |
0.014 |
2.19 |
2.22 |
1.492 |
1.495 |
|
|
1.501 |
1.509 |
Bestimmungstabellen für Edelsteine, Birgit
Günther, 2008
|
|
Yugawaralite |
1.495 |
1.504 |
0.009 |
0.009 |
2.23 |
2.25 |
1.495 |
1.495 |
1.497 |
1.497 |
1.504 |
1.504 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
|
Yugawaralite |
1.495 |
1.504 |
0.009 |
0.009 |
2.23 |
2.25 |
|
|
|
|
|
|
http://www.gemmology.be
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)