|
INVESTIGATIONS
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Location |
Info |
ne min |
ne max |
no min |
no max |
Spectrum |
UVS |
UVL |
Reference |
Sturmanite |
1.5 |
1.5 |
|
|
1.86 |
1.86 |
yellow |
|
3.82ct cabochon, translucent, spot
RI |
|
|
|
|
|
|
|
Gems & Gemology 1997 Fall,
p222-223 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Sturmanite |
1.499 |
1.505 |
0.005 |
0.005 |
1.84 |
1.86 |
|
|
|
|
Tables of Gemstone
Identification, Roger Dedeyne, Ivo Quintens, 2007
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)