|
INVESTIGATIONS
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 |
|
Gadolinite |
1.77 |
1.82 |
0.01 |
0.04 |
4 |
4.65 |
1.770 |
1.780 |
|
|
1.780 |
1.820 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
|
Gadolinite |
1.77 |
1.82 |
0.01 |
0.04 |
4 |
4.65 |
|
|
|
|
|
|
http://www.gemmology.be
|
|
Gadolinite |
1.77 |
1.82 |
0.01 |
0.04 |
4 |
4.65 |
1.770 |
1.780 |
|
|
1.780 |
1.820 |
http://www.geminterest.com
|
|
Gadolinite |
|
|
|
|
4 |
4.5 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972
|
|
Gadolinite |
1.77 |
1.82 |
0.01 |
0.04 |
4 |
4.65 |
1.770 |
1.780 |
|
|
1.780 |
1.820 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA