|
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 |
dickite |
1.55 |
1.58 |
|
|
|
|
orangy yellow |
|
tianhuang, shadow IR, chinese stone seal |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2017 Vol35, N°6, p472 |
dickite |
1.56 |
1.57 |
|
|
2.56 |
2.66 |
cream, red, grey, white |
Saraburi, Thailand |
a gem material for carving; translucent to opaque, aggregate |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology 2009 Vol31, N°5-8, p211-225 |
dickite |
1.56 |
1.57 |
|
|
2.57 |
2.68 |
greyish white, greyish yellow, brownish red |
|
semitranslucent to opaque, RI : distant vision |
|
|
|
|
|
|
|
inert to strong white |
inert to strong white |
The Journal of Gemmology 2010 Vol 32, N°1-4, p68 |
TABLES
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)