|
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 |
Magnesite |
1.52 |
1.7 |
0.18 |
0.18 |
3.16 |
3.16 |
colourless |
Brumado, Bahia,
Brazil |
12.93ct |
|
|
|
|
|
inert |
inert |
GIA Gem Database
35411 |
Magnesite |
1.6 |
1.6 |
|
|
2.9 |
2.9 |
lime-green |
Kambalda mine, Western
Australia |
called "citron Chrysoprase", hardness
4-5 |
|
|
|
|
|
pale
whitish |
strong bluish
white |
The Australian Gemmologist 1982
may, p231-233 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Magnesite |
1.508 |
1.717 |
0.19 |
0.202 |
3 |
3.12 |
1.508 |
1.515 |
1.700 |
1.717 |
http://www.geminterest.com
|
Magnesite |
1.509 |
1.719 |
0.189 |
0.192 |
2.96 |
2.98 |
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
Magnesite |
1.509 |
1.719 |
0.189 |
0.202 |
2.96 |
3.12 |
1.509 |
1.527 |
1.700 |
1.719 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
Magnesite |
1.509 |
1.719 |
0.191 |
0.199 |
2.92 |
3.12 |
1.509 |
1.527 |
1.700 |
1.719 |
Gemmological Tables, Ulrich Henn, 2004
|
Magnesite |
1.509 |
1.717 |
0.189 |
0.192 |
3 |
3.12 |
|
|
|
|
http://www.gemmology.be
|
Magnesite |
1.509 |
1.717 |
0.191 |
0.202 |
3 |
3.12 |
1.509 |
1.515 |
1.700 |
1.717 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
Magnesite |
1.509 |
1.717 |
0.182 |
0.192 |
2.97 |
3.12 |
1.509 |
1.515 |
1.700 |
1.717 |
Tables of Gemstone
Identification, Roger Dedeyn, Ivo Quintens, 2007
|
Magnesite |
1.515 |
1.718 |
0.202 |
0.202 |
3 |
3.12 |
|
|
|
|
John Sinkakas, Gemstone and
mineral data book,1972
|
Magnesite |
1.515 |
1.717 |
0.202 |
0.202 |
3 |
3.12 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung, Pschichholz
FGA, 1975
|
Magnesite |
1.515 |
1.717 |
0.202 |
0.202 |
3 |
3.12 |
|
|
|
|
Gems, R Webster, 5th edition
1994
|
CAUSE OF COLOUR
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA (%)