|
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 |
Tugtupite |
1.485 |
1.485 |
|
|
2.29 |
2.29 |
purple |
|
5.70ct |
|
|
|
|
|
inert |
bright orange |
GJEPC-India, LAB INFORMATION CIRCULAR 2008 Volume 52 September |
Tugtupite |
1.494 |
1.504 |
0.004 |
0.007 |
2.27 |
2.44 |
light pink to dark red, white (no gem), light blue |
Kvjanefeld, Greenland |
|
1.498 |
1.504 |
1.494 |
1.497 |
|
dark red |
red to light red, blue: light orange-yellow |
Gems & Gemology 1982 summer, p90-94 |
Tugtupite |
1.495 |
1.495 |
|
|
2.42 |
2.42 |
purple pink |
|
2.40ct |
|
|
|
|
|
bright glow of red |
bright orange |
GJEPC-India, LAB INFORMATION CIRCULAR 2008 Volume 52 September |
Tugtupite |
|
|
|
|
|
|
red |
Greenland |
1.22ct transparent |
|
|
|
|
|
'crimson' red |
weak 'salmon' pink |
The Journal of Gemmology 2015 Vol 34, No.5, p396-397 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Tugtupite |
1.49 |
1.502 |
0.006 |
0.008 |
2.3 |
2.57 |
1.500 |
1.502 |
1.490 |
1.496 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Tugtupite |
1.49 |
1.503 |
0.005 |
0.005 |
2.27 |
2.45 |
|
|
|
|
Gemmo.eu 2017 |
Tugtupite |
1.492 |
1.504 |
0.004 |
0.008 |
2.33 |
2.57 |
1.498 |
1.504 |
1.492 |
1.497 |
Gemmological Tables, Ulrich Henn,
2004 |
Tugtupite |
1.495 |
1.502 |
0.006 |
0.008 |
2.3 |
2.57 |
1.499 |
1.502 |
1.495 |
1.497 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.008 |
2.3 |
2.57 |
1.502 |
1.502 |
1.496 |
1.496 |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.006 |
2.3 |
2.57 |
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.008 |
2.3 |
2.57 |
|
|
|
|
http://www.gemmology.be |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.008 |
2.3 |
2.7 |
1.502 |
1.502 |
1.496 |
1.496 |
http://www.geminterest.com |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.006 |
2.36 |
2.57 |
|
|
|
|
Gems, R Webster, 5th edition 1994 |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.008 |
2.3 |
2.57 |
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyn, Ivo Quintens, 2007 |
Tugtupite |
1.496 |
1.502 |
0.006 |
0.008 |
2.33 |
2.35 |
1.499 |
1.502 |
1.492 |
1.496 |
Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification
(2006), 873pp |
Tugtupite |
|
|
|
|
2.28 |
2.28 |
|
|
|
|
John Sinkakas, Gemstone and mineral data book,1972 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Tugtupite |
pink |
colour center(s) involving sulphur |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)