|
INVESTIGATIONS
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Location |
Info |
Spectrum |
UVS |
UVL |
Reference |
Cuprite |
2.45 |
2.45 |
5.92 |
5.92 |
black-red |
|
0.15ct |
cutoff 650 |
|
|
ACAM labo 1064 |
Cuprite |
|
|
6.12 |
6.12 |
very dark orangy red |
Onganja Mine, Khomas, Namibia |
16.64ct |
broad absorption below 645nm |
inert |
inert |
GIA Gem Database 34705 |
TABLES
Stone |
RI
min |
RI
max |
Dens
min |
Dens
max |
Reference |
Cuprite |
2.848 |
2.849 |
5.85 |
6.15 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Cuprite |
2.848 |
2.848 |
5.8 |
6.2 |
Gemmological Tables, Ulrich Henn,
2004 |
Cuprite |
2.848 |
2.848 |
6 |
6.14 |
http://www.gemmology.be |
Cuprite |
2.848 |
2.852 |
5.85 |
6.15 |
http://www.geminterest.com |
Cuprite |
2.848 |
2.848 |
6 |
6.14 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Cuprite |
2.848 |
2.848 |
6 |
6.14 |
Tables of Gemstone Identification, Roger Dedeyn, Ivo
Quintens, 2007 |
Cuprite |
2.849 |
2.849 |
5.85 |
6.15 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Cuprite |
2.85 |
2.85 |
6.12 |
6.13 |
John Sinkakas, Gemstone and mineral data
book,1972 |
Cuprite |
2.85 |
2.85 |
5.85 |
6.15 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Cuprite |
2.85 |
2.85 |
5.85 |
6.15 |
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Cuprite |
red |
band theory |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Cupriet |
Ogonja Mine (Onganja Mine), Ogonja
(Onganja), Seeis |
Windhoek District |
Khomas Region |
Namibië |
Namibia, Zauberwelt edler Steine und
Kristalle, Steffen Jahn e.a., 2001 |
CHEMICAL DATA