|
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 |
Triphylite |
1,685 |
1,693 |
0,008 |
0,008 |
3,53 |
3,53 |
brown |
Brazil |
1.22ct |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der
Deutschen Gemmologischen Gesellschaft 2008 Dec, p118 |
Triphylite |
1,687 |
1,7 |
0,007 |
0,008 |
3,52 |
3,57 |
dark orangy red, slight
colour change from greenish brown in daylight to brownish pink or purple |
Galileia, Minas Gerais,
Brazil |
0.26-9.31ct |
1,687 |
1,692 |
1,689 |
1,695 |
1,695 |
1,700 |
410, 450-460nm, strong
lines near 470, bands at 490-500 and 600 |
inert |
inert |
Gems & Gemology 2009
Fall, p229-230 |
Triphylite |
1,688 |
1,693 |
0,005 |
0,005 |
3,5 |
3,5 |
greenish-brown |
Conselheiro Pena, Minas
Gerais, Brazil |
|
1,688 |
1,688 |
1,689 |
1,689 |
1,693 |
1,693 |
|
|
|
Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1993 Sep, p66 |
Triphylite |
1,689 |
1,695 |
0,006 |
0,006 |
3,4 |
3,4 |
greyish brown |
|
0.65ct |
1,689 |
1,689 |
1,691 |
1,691 |
1,695 |
1,695 |
strong line at 410, weak
at 425, moderate band at 450-460, line at 470, band at 485-498, weak band at
540-590nm |
inert |
inert |
Gems & Gemology 1988
fall p 170 |
Triphylite |
1,69 |
1,696 |
0,006 |
0,006 |
3,52 |
3,52 |
colour-change yellow
green to greenish yellow (daylight) to yellowish orange or brownish orange
(incandescent light) |
Brazil |
0.23 to 1.93ct, 67.5 %
triphylite - 32.5% lithiophylite |
1,690 |
1,690 |
1,691 |
1,691 |
1,696 |
1,696 |
|
|
|
The Australian
Gemmologist 2011 Vol 24, N°5, p104-105 |
Triphylite |
1,67 |
|
|
|
3,38 |
3,38 |
orange |
|
cabochon, 4,66ct,
translucent, spot RI |
|
|
|
|
|
|
|
|
|
iigj lab information
circular 2018 Vol 76, july 2018 |
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 |
Triphylite |
1.663 |
1.702 |
0.005 |
0.006 |
3.35 |
3.6 |
1.663 |
1.696 |
|
|
1.673 |
1.702 |
Bestimmungstabellen
für Edelsteine, Birgit Günther, 2008 |
Triphylite |
1.674 |
1.701 |
0.005 |
0.01 |
3.4 |
3.6 |
|
|
|
|
|
|
Gemmo.eu
|
Triphylite |
1.689 |
1.702 |
0.006 |
0.008 |
3.34 |
3.58 |
1.689 |
1.694 |
1.689 |
1.695 |
1.695 |
1.702 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
Triphylite |
1.689 |
1.702 |
0.006 |
0.008 |
3.34 |
3.58 |
|
|
|
|
|
|
http://www.gemmology.be |
Triphylite |
1.689 |
1.702 |
0.006 |
0.008 |
3.34 |
3.58 |
1.689 |
1.694 |
1.689 |
1.695 |
1.695 |
1.702 |
http://www.geminterest.com |
Triphylite |
1.689 |
1.702 |
0.006 |
0.008 |
3.42 |
3.52 |
1.689 |
1.694 |
|
|
1.695 |
1.702 |
Gems, R Webster,
5th edition 1994 |
Triphylite |
1.689 |
1.702 |
0.006 |
0.008 |
3.34 |
3.58 |
1.689 |
1.694 |
1.689 |
1.695 |
1.695 |
1.702 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Triphylite |
1.689 |
1.702 |
0.006 |
0.008 |
3.34 |
3.58 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Triphylite |
|
Galiléia,
Governador Valadares, Rio doce |
Minas Gerais |
Brazil |
Gems & Gemology 2009 Fall, p229-230 |