|
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 |
Poldervaartite |
1.66 |
1.685 |
0.025 |
0.025 |
3.06 |
3.06 |
yellow,
translucent |
|
0.37ct,
aggregate |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2008 Dec,
p124 |
Poldervaartite |
1.67 |
1.69 |
0.02 |
0.02 |
3.03 |
3.12 |
|
|
|
|
|
|
|
|
|
|
deep red |
inert |
Gems & Gemology 2003 spring,
p60-61 |
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 |
Poldervaartite |
1.634 |
1.69 |
0.02 |
0.022 |
2.91 |
3.12 |
1.634 |
1.670 |
|
|
1.656 |
1.690 |
http://www.geminterest.com
|
Poldervaartite |
1.67 |
1.69 |
0.02 |
0.02 |
3.03 |
3.12 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyn,
Ivo Quintens, 2007
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)