|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Location |
Info |
Spectrum |
UVS |
UVL |
Reference |
|
Tektite - Libyan desert
glass |
1,44 |
1,44 |
|
|
|
|
bangle 144,67 ct, spot RI |
|
|
|
Gems & Gemology 2023
Spring, p73 |
|
Tektite - Libyan desert
glass |
1,46 |
1,46 |
2,22 |
2,22 |
light yellow |
Egypt |
4.49ct |
|
inert |
inert |
ACAM lab 3978 |
|
Tektite - Libyan desert
glass |
1,465 |
1,465 |
2,21 |
2,21 |
light yellow |
Egypt |
52.35ct cabochon |
|
inert |
inert |
ACAM lab 4889 |
|
Tektite - Darwin glass |
1,478 |
1,482 |
2,25 |
2,52 |
pale to dark green |
Mt Darwin, Tasmania,
Australia |
|
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1997 Mar, p7-12 |
|
Tektite - Moldavite |
1,481 |
1,482 |
2,341 |
2,341 |
green |
|
|
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2015 Dez, p403-409 |
|
Tektite - Moldavite |
1,482 |
1,482 |
2,31 |
2,31 |
green |
Czech Republic |
7.6ct |
|
inert |
inert |
ACAM Lab 4167 |
|
Tektite - Moldavite |
1,488 |
1,49 |
2,356 |
2,356 |
green |
|
|
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2015 Dez, p403-409 |
|
Tektite - Moldavite |
1,49 |
1,49 |
2,34 |
2,34 |
green |
Czech Republic |
21.55ct |
|
inert |
inert |
ACAM Lab 827 |
|
Tektite - Indochinite |
1,51 |
1,51 |
2,44 |
2,44 |
black |
Billiton, Indonesia |
7.25 ct,
"billitonite" |
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2017 Jun, p4 |
TABLES
|
Stone |
RI
min |
RI
max |
Dens
min |
Dens
max |
Reference |
|
Tektite - Libyan desert glass |
1.459 |
1.464 |
2.19 |
2.22 |
Gemmo.eu
|
|
Tektite - Libyan desert glass |
1.46 |
1.465 |
2.2 |
2.22 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Moldavite |
1.46 |
1.6 |
2.21 |
2.96 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Tektite - Libyan desert glass |
1.46 |
1.46 |
2.2 |
2.2 |
Gemology Tools Professional 2010 |
|
Tektite |
1.46 |
1.54 |
2.21 |
2.96 |
Gemology Tools Professional 2010 |
|
Tektite |
1.462 |
1.543 |
2.21 |
2.96 |
http://www.gemmology.be |
|
Tektite - Libyan desert glass |
1.462 |
1.462 |
2.21 |
2.21 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Moldavite |
1.468 |
1.503 |
2.32 |
2.4 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Tektite - Darwin glass |
1.47 |
1.482 |
2.26 |
2.26 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Tektite - Darwin glass |
1.47 |
1.48 |
2.75 |
2.96 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Darwin glass |
1.47 |
1.48 |
2.75 |
2.96 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Bediasite |
1.48 |
1.51 |
2.33 |
2.43 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Bediasite |
1.48 |
1.51 |
2.33 |
2.43 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Moldavite |
1.48 |
1.49 |
2.3 |
2.5 |
John Sinkakas,
Gemstone and mineral data book,1972 |
|
Tektite - Moldavite |
1.48 |
1.54 |
2.27 |
2.4 |
http://www.geminterest.com |
|
Tektite - Moldavite |
1.48 |
1.54 |
2.27 |
2.4 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Moldavite |
1.48 |
1.54 |
2.34 |
2.39 |
Gems, R Webster,
5th edition 1994 |
|
Tektite - Moldavite |
1.48 |
1.54 |
2.27 |
2.4 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Moldavite |
1.48 |
1.51 |
2.32 |
2.4 |
Gemology Tools Professional 2010 |
|
Tektite - Georgia tektite/
Massachussetts tektite |
1.485 |
1.485 |
2.33 |
2.33 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Georgia tektite/
Massachussetts tektite |
1.485 |
1.485 |
2.33 |
2.34 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Indochinite |
1.49 |
1.51 |
2.4 |
2.44 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Indochinite |
1.49 |
1.51 |
2.4 |
2.44 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Moldavite |
1.49 |
1.51 |
2.36 |
2.44 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Tektite - Moldavite |
1.49 |
1.51 |
2.36 |
2.44 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Tektite - Australite |
1.5 |
1.52 |
2.38 |
2.46 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Australite |
1.5 |
1.52 |
2.38 |
2.46 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Ivory Coast tektite |
1.5 |
1.52 |
2.4 |
2.51 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Ivory Coast tektite |
1.5 |
1.52 |
2.4 |
2.51 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Javaite |
1.509 |
1.509 |
2.43 |
2.45 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Javaite |
1.509 |
1.509 |
2.43 |
2.45 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Billitonite |
1.51 |
1.53 |
2.46 |
2.51 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Billitonite |
1.51 |
1.53 |
2.46 |
2.51 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Tektite - Philippinite |
1.513 |
1.513 |
2.44 |
2.45 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Tektite - Philippinite |
1.513 |
1.513 |
2.44 |
2.45 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
CAUSE OF
COLOUR
|
Stone |
Colour |
Cause
of colour |
Reference |
|
Tektite |
brown |
Fe³+ in octahedral coordination |
Gems & Gemology Summer 1988 |
|
Tektite - Moldavite |
green |
Fe²+ in octahedral coordination |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
|
Inclusion |
Stone |
Reference |
|
anatase |
Tektite - Libyan desert glass |
http://www.b14643.de/Sahara/LDG/index.htm |
|
anhydrite |
Tektite - Libyan desert glass |
http://www.b14643.de/Sahara/LDG/index.htm |
|
aragonite |
Tektite - Libyan desert glass |
http://www.b14643.de/Sahara/LDG/index.htm |
|
cristobalite |
Tektite - Libyan desert glass |
http://www.b14643.de/Sahara/LDG/index.htm |
|
rutile |
Tektite - Libyan desert glass |
http://www.b14643.de/Sahara/LDG/index.htm |
|
zircon |
Tektite - Libyan desert glass |
http://www.b14643.de/Sahara/LDG/index.htm |
LOCALITIES
CHEMICAL DATA
(%)
|
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MgO |
FeO |
TiO2 |
CaO |
Na2O |
Cr2O3 |
Fe2O3 |
K2O |
CuO |
|
|
Tektite - Darwin glass |
green |
Tasmania |
Australia |
Gemmologie, Zeitschrift der deutschen
gemmologischen Gesellschaft, 1996, Mar, p11 |
85.3 |
8.4 |
|
2.28 |
0.74 |
|
|
|
|
2.06 |
1.23 |
|
Tektite - Indochinite |
|
|
Thailand |
The Journal of
Gemmology 2000, Vol 27, N°5,p282 |
75.13 |
12.93 |
0.96 |
|
0.61 |
2.32 |
0.29 |
0.15 |
5.09 |
2.51 |
|
|
Tektite - Moldavite |
|
|
|
The Journal of
Gemmology 2000, Vol 27, N°5,p282 |
76.59 |
9.8 |
2.07 |
|
0.27 |
5.22 |
|
0.29 |
1.75 |
4.02 |
|