|
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 |
Humite - humite
group |
1.607 |
1.675 |
0.029 |
0.031 |
3.2 |
3.32 |
1.607 |
1.643 |
|
|
1.639 |
1.675 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
Humite - humite
group |
1.607 |
1.675 |
0.029 |
0.031 |
3.2 |
3.32 |
1.607 |
1.643 |
|
|
1.639 |
1.675 |
http://www.geminterest.com
|
Humite - humite
group |
1.607 |
1.675 |
0.029 |
0.031 |
3.2 |
3.32 |
|
|
|
|
|
|
http://www.gemmology.be
|
Humite - humite
group |
1.607 |
1.675 |
0.029 |
0.031 |
3.2 |
3.32 |
1.607 |
1.643 |
|
|
1.639 |
1.675 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA