|
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 |
Fayalite |
1.827 |
1.879 |
0.052 |
0.052 |
4.39 |
4.39 |
|
|
|
|
|
|
http://www.gemmology.be |
Fayalite |
1.827 |
1.879 |
0.052 |
0.052 |
4.39 |
4.39 |
1.827 |
1.827 |
1.869 |
1.869 |
1.879 |
1.879 |
http://www.geminterest.com
|
Fayalite |
1.827 |
1.879 |
0.052 |
0.052 |
4.39 |
4.39 |
1.827 |
1.827 |
1.869 |
1.869 |
1.879 |
1.879 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
Fayalite |
1.827 |
1.879 |
0.052 |
0.052 |
4.39 |
4.39 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR
Stone |
Colour |
Cause of
colour |
Reference |
Fayalite |
brown |
FeČ+ |
http://minerals.caltech.edu/ |
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA