|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Location |
Info |
Spectrum |
UVS |
UVL |
Reference |
|
Andradite-grossular |
1.754 |
1.768 |
3.58 |
3.64 |
emerald green,
green |
|
0.18-2.22
ct |
absorption of blue and violet,
band around 610nm |
inert |
inert |
http://www.geminterest.com 2009
|
|
Andradite-grossular |
1.755 |
1.774 |
3.58 |
4.19 |
yellowish-green |
Mali |
|
|
|
|
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1994 Dez, p105 |
|
Andradite-grossular |
1.758 |
1.785 |
3.63 |
3.72 |
yellowish green to yellowish
brown |
Mali |
83-70% grossular and 17-29%
andradite; |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995 Mar,
p17-24 |
|
Andradite-grossular |
1.77 |
1.77 |
3.65 |
3.65 |
yellow-green |
Mali |
strong anomalous
birefringence |
band at 440nm, 600nm
line |
|
|
Gems & Gemology 1994 winter, p
265-266 |
|
Andradite-grossular |
1.77 |
1.77 |
3.66 |
3.66 |
changing from greyish green in
daylight to brown in incandescent
light |
|
1.79 ct |
cut-off at 450 nm and band at
about 590 |
inert |
inert |
Gems & Gemology 2003
Summer,p146 |
|
Andradite-grossular |
1.774 |
1.774 |
3.67 |
3.67 |
green |
Mali |
5.5ct |
|
inert |
inert |
ACAM lab
3776 |
|
Andradite-grossular |
|
|
|
|
bicolor : brownish
yellow+greenish yellow and bicolor : yellowish
green+green-yellow |
Mali |
2.57ct and 1.22ct, chelsea :
brownish red |
415 nm cutoff, 440-450 nm
band |
inert |
inert |
Gems & Gemology 1997 Fall,
p224-225 |
TABLES
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Reference |
|
Andradite-grossular
|
1.758 |
1.785 |
3.63 |
3.72 |
Tables of Gemstone
Identification, Roger Dedeyne, Ivo Quintens, 2007
|
|
Andradite-grossular |
1.769 |
1.842 |
3.63 |
3.78 |
Gemmo.eu
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE | |||
|
andradite-grossular |
|
Nioro du Sahel
Circle |
Kayes
Region |
Mali |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1994, Dez, p105 |