|
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 |
Brazilianite |
1.599 |
1.623 |
0.019 |
0.021 |
2.96 |
2.97 |
|
Agenor Silistrino pegmatite, Araçuaí
(Arassuaí), Jequitinhonha Valley, Minas Gerais, Brazil |
1.98ct and 3.97ct |
1.599 |
1.602 |
1.608 |
1.610 |
1.619 |
1.623 |
|
|
|
The Australian Gemmologist 2015 Vol 25, No.10
p346-353 |
Brazilianite |
1.601 |
1.624 |
0.023 |
0.023 |
3.01 |
3.01 |
yellowish |
|
0.66 ct |
1.601 |
1.601 |
1.610 |
1.610 |
1.624 |
1.624 |
none |
inert |
inert |
ACAM lab
897 |
Brazilianite |
1.601 |
1.623 |
0.019 |
0.019 |
2.98 |
3 |
|
Telirio mine, Linopolis, Divino das Laranjeiras,
Governador Valadares, Rio Doce, Minas Gerais, Brazil |
1.47ct, 101ct, 0.56ct |
1.601 |
1.604 |
1.607 |
1.609 |
1.620 |
1.623 |
|
|
|
The Australian Gemmologist 2015 Vol 25, No.10
p346-353 |
Brazilianite |
1.602 |
1.619 |
0.017 |
0.017 |
3.01 |
3.01 |
greenish yellow |
Divino das Laranjeiras, minas Gerais, Brazil |
17.33ct |
|
|
|
|
|
|
|
inert |
weak yellow |
GIA Gem Database 34271 |
Brazilianite |
1.602 |
1.621 |
0.019 |
0.019 |
2.95 |
2.95 |
|
Ari Machado pegmatite, Conselheiro Pena,
Minas Gerais, Brazil |
53.82ct |
1.602 |
1.602 |
1.608 |
1.608 |
1.621 |
1.621 |
|
|
|
The Australian Gemmologist 2015 Vol 25, No.10
p346-353 |
Brazilianite |
1.605 |
1.621 |
0.016 |
0.016 |
3.01 |
3.01 |
light yellow-green |
Minas Gerais, Brazil |
14.39ct |
|
|
|
|
|
|
|
inert |
inert |
GIA Gem Database 33948 |
Brazilianite |
1.608 |
1.62 |
0.012 |
0.012 |
2.99 |
2.99 |
light greenish yellow |
Minas Gerais, Brazil |
11.91ct |
|
|
|
|
|
|
|
inert |
inert |
GIA Gem Database 33942 |
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 |
Brazilianite |
1.598 |
1.625 |
0.019 |
0.021 |
2.94 |
3 |
1.598 |
1.606 |
|
|
1.617 |
1.625 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Brazilianite |
1.599 |
1.623 |
0.019 |
0.021 |
2.98 |
3.03 |
1.599 |
1.603 |
1.609 |
1.610 |
1.620 |
1.623 |
http://www.geminterest.com |
Brazilianite |
1.599 |
1.624 |
0.019 |
0.021 |
2.94 |
3 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Brazilianite |
1.6 |
1.625 |
0.018 |
0.022 |
2.96 |
3 |
|
|
|
|
|
|
Gemmo.eu
|
Brazilianite |
1.602 |
1.624 |
0.019 |
0.021 |
2.91 |
2.97 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Brazilianite |
1.602 |
1.623 |
0.019 |
0.021 |
2.98 |
3 |
|
|
|
|
|
|
http://www.gemmology.be |
Brazilianite |
1.602 |
1.625 |
0.018 |
0.02 |
2.94 |
2.99 |
1.602 |
1.604 |
|
|
1.621 |
1.625 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Brazilianite |
1.602 |
1.623 |
0.019 |
0.021 |
2.98 |
2.995 |
1.602 |
1.602 |
1.609 |
1.609 |
1.621 |
1.623 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Brazilianite |
1.602 |
1.623 |
0.019 |
0.021 |
2.9 |
3 |
1.602 |
1.602 |
|
|
1.621 |
1.623 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Brazilianite |
1.603 |
1.623 |
|
|
2.99 |
2.99 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
Brazilianite |
1.603 |
1.623 |
0.02 |
0.02 |
2.9 |
2.98 |
1.603 |
1.603 |
1.612 |
1.612 |
1.623 |
1.623 |
Gemmological Tables, Ulrich Henn,
2004 |
Brazilianite |
1.603 |
1.623 |
0.02 |
0.02 |
2.98 |
2.995 |
1.603 |
1.603 |
1.612 |
1.612 |
1.623 |
1.623 |
Gems, R Webster, 5th edition 1994 |
CAUSE OF COLOUR
MINERAL
INCLUSIONS
Inclusion |
Stone |
Reference |
muscovite |
Brazilianite |
Dr. W.F. Eppler, Praktische Gemmologie,
1984 |
tourmaline |
Brazilianite |
Dr. W.F. Eppler, Praktische Gemmologie,
1984 |
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Brazilianite |
|
Conselheiro Pena |
Minas Gerais |
Brazil |
Michael O'Donoghue, Gems: Their Sources,
Descriptions and Identification (2006),
873pp |
Brazilianite |
Corrego Frio Mine, Linopolis, Divino las
Laranjeiras, Governador Valadares |
Divino das Laranjeiras |
Minas Gerais |
Brazil |
Michael O'Donoghue, Gems: Their Sources,
Descriptions and Identification (2006),
873pp |
Brazilianite |
Telirio mine, Linopolis, Divino das Laranjeiras,
Governador Valadares |
Rio Doce |
Minas Gerais |
Brazil |
Lapis 10/1990 |
Brazilianite |
Palermo No. 1 mine, Groton |
Grafton County |
New Hampshire |
USA |
Michael O'Donoghue, Gems: Their Sources,
Descriptions and Identification (2006),
873pp |
CHEMICAL DATA
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
FeO |
CaO |
Na2O |
K2O |
H2O |
F |
P2O5 |
|
Brazilianite |
|
Corrego Frio |
Brazil |
The Australian Gemmologist 2015, Vol 25, No.10,p350 |
0.12 |
41.97 |
0.04 |
0.03 |
8.38 |
0.01 |
10.04 |
|
39.97 |
Brazilianite |
|
Telirio |
Brazil |
The Australian Gemmologist 2015, Vol 25, No.10,p350 |
0.17 |
42.53 |
0.05 |
0.02 |
8.52 |
0.01 |
8.99 |
|
39.28 |
Brazilianite |
|
Sebastiao Cristino |
Brazil |
The Australian Gemmologist 2015, Vol 25, No.10,p350 |
0.14 |
41.5 |
0.03 |
0.05 |
8.26 |
0.01 |
9.03 |
|
39.29 |
Brazilianite |
|
Ari Machado |
Brazil |
The Australian Gemmologist 2015, Vol 25, No.10,p350 |
0.02 |
43.05 |
0.03 |
0.01 |
8.49 |
0.02 |
10.13 |
0.03 |
39.08 |
Brazilianite |
|
Agenor Silistrino |
Brazil |
The Australian Gemmologist 2015, Vol 25, No.10,p350 |
0.02 |
41.24 |
0.02 |
0.02 |
8.27 |
0.01 |
9.93 |
0.03 |
39.19 |