|
INVESTIGATIONS
TABLES
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Reference |
|
Celluloid |
1.495 |
1.52 |
1.36 |
1.8 |
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Celluloid |
1.495 |
1.68 |
1.04 |
1.8 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Celluloid |
1.495 |
1.52 |
1.25 |
1.8 |
http://www.gemmology.be
|
|
Celluloid |
1.495 |
1.51 |
1.36 |
1.8 |
Gems, R Webster, 5th edition 1994
|
|
Celluloid |
1.495 |
1.52 |
1.25 |
1.8 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR