|
INVESTIGATIONS
|
Stone |
RI min |
RI max |
Dens min |
Dens max |
Colour |
Location |
Info |
Spectrum |
UVS |
UVL |
Reference |
|
Sphalerite |
|
|
4.05 |
4.05 |
greenish yellow |
Spain |
2.35 ct |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2013 62/1-2, Jun, p39 |
|
Sphalerite |
|
|
4.08 |
4.08 |
yellow to orange |
|
cabochons (18 and 20 mm), cat’s-eye and star effect are due to scratches,
IR OTL |
no |
inert |
inert |
Gems & Gemology 2009 winter,
p303-304 |
|
Sphalerite |
2.27 |
2.27 |
4.09 |
4.09 |
yellow-brown |
|
9ct |
|
inert |
inert |
ACAM Lab
2239 |
|
Sphalerite |
|
|
4.09 |
4.09 |
dark red-orange |
Cananea, Sonora, Mexico |
5.82ct |
band below 500nm |
inert |
inert |
GIA Gem Database 34477 |
|
Sphalerite |
2.07 |
2.07 |
4.1 |
4.1 |
yellow |
Sri Lanka |
1.05ct, RI Jemeter |
|
inert |
inert |
ACAM labo 2284 |
|
Sphalerite |
|
|
4.1 |
4.1 |
medium bluish green |
Mont St.-Hilaire, Canada |
3.98ct |
weak, moderately broad bands at about 480, 500, and 560 nm and a stronger
one at 590 nm |
inert |
weak orange |
Gems & Gemology 1995 Spring, p65 |
|
Sphalerite |
|
|
4.1 |
4.1 |
brown-orange |
Spain |
2.64ct |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2013 62/1-2, Jun, p39 |
|
Sphalerite |
|
|
4.1 |
4.1 |
orangy yellow |
Cananea, Sonora, Mexico |
26.21ct |
band at 665-675nm, band below 480nm and above 685nm |
inert |
inert |
GIA Gem Database 34443 |
|
Sphalerite |
|
|
4.1 |
4.1 |
orange |
Cananea, Sonora, Mexico |
39.02ct |
band below 480nm |
weak red |
weak red |
GIA Gem Database 34444 |
|
Sphalerite |
|
|
4.11 |
4.11 |
yellow |
Las Manforas Mine, Camaleno, Cantabria, Spain |
11.05ct, transparent |
broad absorption below 440nm and above 670nm |
inert |
inert |
GIA Gem Database 34117 |
|
Sphalerite |
|
|
4.11 |
4.11 |
orange |
Las Manforas Mine, Camaleno, Cantabria, Spain |
20.88ct, transparent |
broad absorption below 4500nm |
inert |
inert |
GIA Gem Database 34114 |
|
Sphalerite |
2.4 |
2.4 |
4.11 |
4.11 |
green |
Zlatograd Area, Bulgaria |
2.71ct |
|
inert |
inert |
http://www.spec4gem.info 2017 18
December |
TABLES
|
Stone |
RI
min |
RI
max |
Dens
min |
Dens
max |
Reference |
|
Sphalerite synthetic |
2.25 |
2.35 |
4.03 |
4.06 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Sphalerite synthetic |
2.25 |
2.35 |
4.03 |
4.06 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Sphalerite synthetic |
2.25 |
2.35 |
4.03 |
4.09 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Sphalerite synthetic |
2.295 |
2.305 |
4.03 |
4.06 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
|
Sphalerite synthetic |
2.3 |
2.3 |
4.06 |
4.06 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
|
Sphalerite |
2.368 |
2.371 |
4.08 |
4.1 |
John Sinkakas, Gemstone and mineral data
book,1972 |
|
Sphalerite |
2.368 |
2.43 |
3.9 |
4.2 |
http://www.geminterest.com |
|
Sphalerite |
2.368 |
2.371 |
4.08 |
4.1 |
Gems, R Webster, 5th edition 1994 |
|
Sphalerite |
2.369 |
2.371 |
3.99 |
4.1 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Sphalerite |
2.369 |
2.369 |
4.01 |
4.1 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Sphalerite |
2.369 |
2.5 |
3.9 |
4.1 |
Gemology Tools Professional 2010 |
|
Sphalerite |
2.369 |
2.431 |
3.9 |
4.12 |
Gemmo.eu
|
|
Sphalerite |
2.37 |
2.37 |
4.05 |
4.1 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Sphalerite |
2.37 |
2.43 |
3.9 |
4.1 |
http://www.gemmology.be |
|
Sphalerite |
2.37 |
2.37 |
4.09 |
4.09 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Sphalerite |
2.37 |
2.43 |
3.9 |
4.1 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
|
Sphalerite |
2.37 |
2.43 |
3.9 |
4.1 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
CAUSE OF
COLOUR
|
Stone |
Colour |
Cause
of colour |
Reference |
|
Sphalerite |
yellow to black |
iron -> sulfur charge transfer |
Gems & Gemology Summer 1988 |
|
Sphalerite |
green |
Co²+ in tetrahedral coordination |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Sphalerite |
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy
quarry) |
Mont Saint-Hilaire, Rouville County |
Quebec |
Canada |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1994, Dez, p137 |
|
Sphalerite |
Las Manforas Mine, Aliva |
Picos de Europa |
Cantabria |
Spain |
http://gem-sphalerite.com |
|
Sphalerite |
Iron Cap Mine, Landsman Camp, Aravaipa District,
Pinaleno Mts |
Graham County |
Arizona |
USA |
|
|
Sphalerite |
Thomasville Crushed Stone Quarry, Thomasville |
York County |
Pennsylvania |
USA |
Gems & Gemology 1992 Fall p204 |
CHEMICAL DATA
(%)