|
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 |
Leucite |
1.508 |
1.509 |
0.001 |
0.001 |
2.5 |
2.5 |
yellowish |
Italy |
0.55ct |
1.509 |
1.509 |
1.508 |
1.508 |
|
inert |
inert |
http://www.geminterest.com 2008 |
Leucite |
1.508 |
1.509 |
0.001 |
0.001 |
2.5 |
2.5 |
colourless |
Italy |
1.52ct |
|
|
|
|
no features |
inert |
inert |
GIA Gem Database 35442 |
Leucite |
1.51 |
1.51 |
0 |
0 |
2.44 |
2.44 |
colourless |
|
0.36ct |
|
|
|
|
|
|
|
ACAM labo |
Leucite |
1.51 |
1.51 |
0 |
0 |
2.5 |
2.5 |
licht yellowish |
Italy |
0.74ct |
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2008 Dec, p120 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Leucite |
1.5 |
1.5 |
0 |
0 |
2.45 |
2.5 |
|
|
|
|
http://www.geminterest.com |
Leucite |
1.5 |
1.5 |
0 |
0.001 |
2.47 |
2.5 |
|
|
|
|
http://www.gemmology.be |
Leucite |
1.5 |
1.5 |
0 |
0 |
2.47 |
2.5 |
|
|
|
|
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
Leucite |
1.5 |
1.5 |
0 |
0 |
2.47 |
2.5 |
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Leucite |
1.504 |
1.51 |
|
|
2.45 |
2.5 |
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Leucite |
1.504 |
1.512 |
0.001 |
0.001 |
2.45 |
2.5 |
1.509 |
1.512 |
1.504 |
1.508 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Leucite |
1.504 |
1.511 |
0 |
0.001 |
2.45 |
2.5 |
|
|
|
|
Gemology Tools Professional 2010 |
Leucite |
1.507 |
1.512 |
0 |
0.001 |
2.44 |
2.51 |
|
|
|
|
Gemmo.eu 2019 |
Leucite |
1.508 |
1.51 |
0.001 |
0.002 |
2.45 |
2.5 |
1.509 |
1.510 |
1.508 |
1.508 |
Gemmological Tables, Ulrich Henn,
2004 |
Leucite |
1.508 |
1.509 |
0 |
0.001 |
2.45 |
2.5 |
1.509 |
1.509 |
1.508 |
1.508 |
Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification
(2006), 873pp |
Leucite |
1.51 |
1.51 |
0 |
0 |
2.45 |
2.5 |
|
|
|
|
John Sinkakas, Gemstone and mineral data book,1972 |
Leucite |
1.51 |
1.51 |
0 |
0 |
2.45 |
2.5 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Leucite |
1.51 |
1.51 |
0.001 |
0.001 |
2.45 |
2.5 |
|
|
|
|
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
CHEMICAL DATA
(%)