|
INVESTIGATIONS
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Locality |
Info |
nx min |
nx max |
ny min |
ny max |
nz min |
nz max |
Spectrum |
UVS |
UVL |
Reference |
Preobrazhenskite |
1.57 |
1.599 |
0.029 |
0.029 |
2.47 |
2.47 |
|
Kazakhstan |
0.09ct |
|
|
|
|
|
|
|
faint yellowish
orange |
faint yellowish
orange |
Gems & Gemology 1995 Summer,
p130 |
Preobrazhenskite |
1.574 |
1.597 |
0.023 |
0.023 |
2.34 |
2.34 |
light
yellowish |
Kazakhstan |
0.61 ct |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2013 62/1-2, Jun,
p35-36 |
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 |
Preobrazhenskite |
1.57 |
1.599 |
0.02 |
0.021 |
2.45 |
2.47 |
1.570 |
1.576 |
1.573 |
1.576 |
1.594 |
1.599 |
Tables of Gemstone
Identification, Roger Dedeyne, Ivo Quintens, 2007
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)