|
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 |
|
Thomsonite |
1.497 |
1.544 |
0.006 |
0.025 |
2.25 |
2.4 |
1.497 |
1.530 |
|
|
1.518 |
1.544 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Thomsonite |
1.497 |
1.545 |
0.015 |
0.02 |
2.3 |
2.4 |
1.497 |
1.530 |
1.513 |
1.532 |
1.518 |
1.545 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Thomsonite |
1.497 |
1.544 |
0.021 |
0.021 |
2.25 |
2.4 |
|
|
|
|
|
|
http://www.gemmology.be
|
|
Thomsonite |
1.497 |
1.544 |
0.021 |
0.021 |
2.25 |
2.4 |
1.497 |
1.530 |
1.513 |
1.533 |
1.518 |
1.544 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
|
Thomsonite |
1.497 |
1.544 |
0.021 |
0.021 |
2.25 |
2.4 |
1.497 |
1.530 |
1.518 |
1.518 |
1.544 |
1.544 |
http://www.geminterest.com
|
|
Thomsonite |
1.497 |
1.544 |
0.021 |
0.021 |
2.25 |
2.4 |
1.497 |
1.530 |
1.513 |
1.533 |
1.518 |
1.544 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
|
Thomsonite |
1.515 |
1.542 |
0.006 |
0.025 |
2.3 |
2.4 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Thomsonite |
1.52 |
1.54 |
0.028 |
0.028 |
2.3 |
2.4 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994
|
|
Thomsonite |
1.53 |
1.53 |
|
|
2.3 |
2.4 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)