|
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 |
Bustamite |
1.678 |
1.692 |
0.014 |
0.014 |
3.45 |
3.45 |
orange-pink |
South
Africa |
1.03 ct,
translucent |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2013 62/1-2, Jun,
p38-39 |
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 |
Bustamite |
1.64 |
1.71 |
0.014 |
0.015 |
3.32 |
3.43 |
1.640 |
1.695 |
1.651 |
1.708 |
1.653 |
1.710 |
Tables of Gemstone
Identification, Roger Dedeyn, Ivo Quintens, 2007
|
Bustamite |
1.66 |
1.705 |
0.013 |
0.019 |
3.3 |
3.5 |
|
|
|
|
|
|
Gemmo.eu 2013
|
Bustamite |
1.662 |
1.707 |
0.014 |
0.015 |
3.32 |
3.43 |
1.662 |
1.692 |
1.674 |
1.705 |
1.676 |
1.707 |
Gemmological Tables, Ulrich Henn, 2004
|
Bustamite |
1.662 |
1.707 |
0.014 |
0.015 |
3.32 |
3.43 |
|
|
|
|
|
|
http://www.gemmology.be
|
Bustamite |
1.662 |
1.707 |
0.014 |
0.015 |
3.32 |
3.43 |
1.662 |
1.692 |
1.674 |
1.705 |
1.676 |
1.707 |
http://www.geminterest.com
|
Bustamite |
1.662 |
1.707 |
0.014 |
0.015 |
3.32 |
3.43 |
1.662 |
1.692 |
1.674 |
1.705 |
1.676 |
1.707 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
Bustamite |
1.662 |
1.707 |
0.014 |
0.015 |
3.32 |
3.43 |
|
|
|
|
|
|
Gemology Tools Professional 2010
|
Bustamite |
1.683 |
1.701 |
0.018 |
0.018 |
3.3 |
3.4 |
1.683 |
1.683 |
1.698 |
1.698 |
1.701 |
1.701 |
Gems, R Webster, 5th edition
1994
|
CAUSE OF COLOUR
Stone |
Colour |
Cause of
colour |
Reference |
Bustamite |
pink |
Mnē+ in octahedral
coordination |
Steffen, Farbe und Lumineszenz von Mineralien,
2000 |
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA