|
INVESTIGATIONS
TABLES
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Reference |
|
Lazurite |
1.498 |
1.505 |
2.38 |
2.45 |
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
|
Lazurite |
1.5 |
1.5 |
2.38 |
2.45 |
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Lazurite |
1.5 |
1.5 |
|
|
Gemmological Tables, Ulrich Henn, 2004
|
|
Lazurite |
1.5 |
1.5 |
2.38 |
2.45 |
Joel Arem, Color Encyclopedia of Gemstones,
1987
|
|
Lazurite |
|
|
2.4 |
2.4 |
John Sinkakas, Gemstone and mineral data
book,1972
|
CAUSE OF COLOUR
|
Stone |
Colour |
Cause of
colour |
Reference |
|
lazurite |
blue |
colour
centre |
Steffen, Farbe und Lumineszenz von Mineralien,
2000 |
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)