|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Info |
Spectrum |
UVS |
UVL |
Reference |
|
YGG, artificial product Yttrium-gallium
garnet |
|
|
5.75 |
5.75 |
green (demantoid
imitation) |
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995 Sep,
p8 |
TABLES
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Reference |
|
YGG, artificial
product |
1.97 |
1.97 |
5.75 |
5.75 |
Gemmological Tables, Ulrich Henn, 2004
|
CAUSE OF COLOUR
CHEMICAL DATA (%)