|
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 |
Cavansite |
1.54 |
1.54 |
|
|
2.24 |
2.27 |
|
Wagholie quarries, Poona,
India |
cabochons up to 5ct, impregnated with organic
substance |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995 Sep,
p4 |
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 |
Cavansite |
1.539 |
1.548 |
0.009 |
0.009 |
2.24 |
2.27 |
1.539 |
1.539 |
1.546 |
1.546 |
1.548 |
1.548 |
Gemmological Tables, Ulrich Henn, 2004
|
Cavansite |
1.539 |
1.548 |
0.009 |
0.009 |
2.24 |
2.31 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 2008
|
Cavansite |
1.539 |
1.551 |
0.009 |
0.009 |
2.21 |
2.31 |
1.539 |
1.542 |
1.544 |
1.544 |
1.546 |
1.551 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR
Stone |
Colour |
Cause of
colour |
Reference |
Cavansite |
blue |
charge transfer
O²-->V4+ |
Alain Abréal, juillet
2002 |
MINERAL INCLUSIONS
LOCALITIES
STONE |
LOCALITIES |
REFERENCE | |||
Cavansite |
Wagholi Quarry, Wagholi, Ahmadnagar (Ahmed
Nagar; Ahmednagar) |
Pune
(Poonah) |
Maharashtra |
India |
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995, Sep,
p4 |
CHEMICAL DATA