|
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 |
|
Chondrodite |
1.589 |
1.62 |
0.027 |
0.029 |
3.2 |
3.24 |
brownish yellow |
Tanzania |
|
1.589 |
1.593 |
|
|
1.618 |
1.620 |
none |
moderate yellow |
inert |
Gems & Gemology 2007 winter,p377 |
|
Chondrodite |
1.592 |
1.623 |
0.028 |
0.029 |
3.12 |
3.2 |
brownish yellow
to yellow, orangy yellow |
Tanga region, Tanzania |
|
|
|
|
|
|
|
no features |
weak to moderate yellow |
inert |
The Journal of
Gemmology 2015 Vol 38, No 8, p654 |
|
Chondrodite |
1.594 |
1.621 |
0.027 |
0.027 |
|
|
|
Mahenge, Tanzania |
0.34ct, biaxial + |
1.594 |
1.594 |
1.602 |
1.602 |
1.621 |
1.621 |
no lines |
slightly chalky yellow |
inert |
Gems & Gemology 2011 Winter, p316 |
|
Chondrodite |
1.609 |
1.639 |
0.027 |
0.028 |
3.17 |
3.22 |
oranje-brown |
Balangoda, Sri Lanka |
|
1.609 |
1.612 |
|
|
1.636 |
1.639 |
|
inert |
inert |
The Journal of
Gemmology 2002 Vol28, N°3, p162-168 |
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 |
|
Chondrodite |
1.589 |
1.646 |
0.025 |
0.036 |
3.16 |
3.26 |
1.589 |
1.616 |
1.602 |
1.627 |
1.618 |
1.646 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Chondrodite |
1.59 |
1.628 |
0.026 |
0.036 |
3.1 |
3.1 |
|
|
|
|
|
|
John Sinkakas,
Gemstone and mineral data book,1972 |
|
Chondrodite |
1.59 |
1.646 |
0.028 |
0.04 |
3.1 |
3.26 |
1.590 |
1.615 |
|
|
1.620 |
1.646 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Chondrodite |
1.59 |
1.64 |
0.03 |
0.03 |
3.1 |
3.2 |
1.590 |
1.600 |
|
|
1.620 |
1.640 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Chondrodite |
1.59 |
1.64 |
0 |
0 |
3.1 |
3.2 |
|
|
|
|
|
|
Gems, R Webster,
5th edition 1994 |
|
Chondrodite |
1.59 |
1.657 |
0.025 |
0.036 |
3.15 |
3.27 |
|
|
|
|
|
|
Gemmo.eu 2016 |
|
Chondrodite |
1.592 |
1.646 |
0.028 |
0.034 |
3.16 |
3.26 |
1.592 |
1.615 |
1.602 |
1.627 |
1.621 |
1.646 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Chondrodite |
1.592 |
1.646 |
0.028 |
0.034 |
3.16 |
3.26 |
1.592 |
1.615 |
1.602 |
1.627 |
1.621 |
1.646 |
http://www.geminterest.com |
|
Chondrodite |
1.592 |
1.646 |
0.028 |
0.034 |
3.16 |
3.26 |
|
|
|
|
|
|
http://www.gemmology.be |
|
Chondrodite |
1.592 |
1.675 |
0.027 |
0.032 |
3.1 |
3.2 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Chondrodite |
1.594 |
1.637 |
0.025 |
0.036 |
3.1 |
3.2 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
|
Chondrodite |
1.594 |
1.67 |
0.025 |
0.036 |
3.1 |
3.2 |
1.594 |
1.643 |
|
|
1.619 |
1.670 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Chondrodite |
1.613 |
1.67 |
0.03 |
0.027 |
3.1 |
3.2 |
1.613 |
1.643 |
|
|
1.643 |
1.670 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
|
Inclusion |
Stone |
Reference |
|
calcite |
Chondrodite |
The Journal of Gemmology
2002, Vol28, N°3 p167 |
|
dolomite |
Chondrodite |
The Journal of Gemmology
2002, Vol28, N°3 p168 |
|
fluorite |
Chondrodite |
The Journal of Gemmology
2002, Vol28, N°3 p169 |
|
graphite |
Chondrodite |
Gems & Gemology 2023
Spring, p 86 |
|
spinel |
Chondrodite |
The Journal of Gemmology
2002, Vol28, N°3 p167 |
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Chondrodite |
Balangoda |
Ratnapura District |
Sabaragamuwa Province |
Sri Lanka |
The Journal of
Gemmology 2002, Vol28, N°3, p162-168 |
|
Chondrodite |
|
|
|
Tanzania |
Gems & Gemology 2007 Winter, p377 |
|
Chondrodite |
Tilly Foster mine, Brewster |
Putnam County |
New York |
USA |
Michael
O'Donoghue, Gems: Their Sources, Descriptions and Identification (2006), 873pp |
CHEMICAL DATA