|
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 |
Scheelite |
|
|
|
|
5.71 |
5.71 |
colourless |
Inner Mongolia, China |
41.83 ct |
|
|
|
|
|
moderate chalky yellowish pink |
strong chalky yellow |
The Journal of Gemmology 2014 Vol 34, No 3, p202-203 |
Scheelite |
|
|
|
|
5.9 |
6.03 |
yellowish white to brownish to almost colourless |
Sri Lanka |
|
|
|
|
|
strong band 520nm, moderate bands 525, 530, 575, 580, 596 |
|
|
The Australian Gemmologist 1982 may, p240 |
Scheelite |
1.92 |
1.935 |
0.012 |
0.015 |
5.94 |
6.3 |
colourless, very light yellow, greyish white |
Colombage, Sri Lanka |
|
1.930 |
1.935 |
1.920 |
1.922 |
|
distinct whitish blue |
dull oily yellow |
Gems & Gemology 1986 fall, p 166-169 |
Scheelite |
|
|
|
|
5.94 |
5.94 |
slightly brownish yellow |
Khaplu, Pakistan |
4.28ct |
|
|
|
|
lines at 560 and 570nm, band at 580-590nm |
strong whitish-blue |
very weak orange |
The Journal of Gemmology 2014 Vol 34, N°4, p 298-299 |
Scheelite |
|
|
|
|
5.94 |
5.94 |
yellow |
Santa Cruz, Mexico |
17.05ct |
|
|
|
|
many lines |
strong yellow |
inert |
GIA Gem Database 34473 |
Scheelite |
|
|
|
|
6.1 |
6.1 |
light brownish yellow |
Sri Lanka |
22.43ct |
|
|
|
|
many lines |
strong yellowish green |
weak greenish yellow |
GIA Gem Database 34884 |
Scheelite |
1.918 |
1.934 |
0.016 |
0.016 |
6.102 |
6.102 |
yellow, white, green |
Sakangyi, Mogok, Birma |
|
|
|
|
|
|
yellow stones: whitish yellow; white and green stones: blue |
yellow stones: whitish yellow; white and green stones: blue |
The Australian Gemmologist 2005 22,
p303-309 |
Scheelite |
|
|
|
|
6.11 |
6.11 |
yellow-brown |
Sri Lanka |
61.73 ct, asteriated (4 ray star) |
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1996 Mar, p2 |
Synthetic scheelite |
1.9 |
1.9 |
|
|
6.11 |
6.11 |
yellow |
|
1.22ct, RI jemeter |
|
|
|
|
lines around 580nm |
bluish yellow |
yellow |
ACAM Lab
4002 |
Scheelite |
|
|
|
|
6.12 |
6.12 |
greenish yellow |
Australia |
9.36ct |
|
|
|
|
broad absorption below 430 and above 680nm |
strong green |
inert |
GIA Gem Database 34102 |
Scheelite |
|
|
|
|
6.12 |
6.12 |
colourless |
Santa Cruz, Mexico |
15.25ct |
|
|
|
|
|
weak blue |
inert |
GIA Gem Database 34472 |
Scheelite |
1.918 |
1.936 |
0.018 |
0.018 |
6.15 |
6.15 |
colourless |
Kern County, California |
|
|
|
|
|
|
very strong blue |
dull oily yellow |
Gems & Gemology 1986 fall, p 166-169 |
Synthetic scheelite |
|
|
|
|
6.16 |
6.16 |
yellow |
|
|
|
|
|
|
|
orange |
orange |
The Journal of Gemmology 1970 N°4,p133-135 |
Scheelite |
|
|
|
|
6.19 |
6.19 |
orange |
China |
11.82ct |
|
|
|
|
broad absorption below 430 and lines at 492, 526, 532, 535, 538, 577,
581, 587, 591, 597 |
yellow + whitish blue |
inert |
GIA Gem Database 34099 |
TABLES
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
Scheelite |
1.918 |
1.938 |
0.016 |
0.016 |
5.1 |
6.3 |
1.934 |
1.938 |
1.918 |
1.921 |
http://www.geminterest.com |
Scheelite |
1.92 |
1.939 |
0.015 |
0.017 |
5.89 |
6.15 |
|
|
|
|
Gemmo.eu
|
Scheelite |
1.915 |
1.937 |
0.016 |
0.038 |
5.9 |
6.12 |
|
|
|
|
Gemology Tools Professional 2010 |
Scheelite |
1.918 |
1.937 |
0.012 |
0.019 |
5.9 |
6.3 |
1.930 |
1.937 |
1.918 |
1.922 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
scheelite synthetic |
1.918 |
1.934 |
0.016 |
0.016 |
5.9 |
6.1 |
1.934 |
1.934 |
1.918 |
1.918 |
Gemmological Tables, Ulrich Henn,
2004 |
Scheelite |
1.918 |
1.937 |
0.016 |
0.016 |
5.9 |
6.3 |
|
|
|
|
http://www.gemmology.be |
Scheelite |
1.918 |
1.934 |
0.016 |
0.016 |
5.9 |
6.1 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Scheelite |
1.918 |
1.937 |
0.016 |
0.016 |
5.9 |
6.3 |
1.934 |
1.937 |
1.918 |
1.920 |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
Scheelite |
1.918 |
1.934 |
0.016 |
0.016 |
5.9 |
6.1 |
|
|
|
|
Gems, R Webster, 5th edition 1994 |
Scheelite |
1.918 |
1.937 |
0.016 |
0.016 |
5.9 |
6.3 |
1.934 |
1.937 |
1.918 |
1.920 |
Tables of Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Scheelite |
1.918 |
1.938 |
0.016 |
0.016 |
5.9 |
6.3 |
1.94 |
1.94 |
1.92 |
1.92 |
Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification
(2006), 873pp |
scheelite synthetic |
1.92 |
1.937 |
0.017 |
0.017 |
5.9 |
6.1 |
1.937 |
1.937 |
1.920 |
1.920 |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
scheelite synthetic |
1.92 |
1.936 |
0.016 |
0.016 |
5.9 |
6.1 |
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
scheelite synthetic |
1.92 |
1.932 |
0.015 |
0.017 |
5.9 |
6.16 |
1.932 |
1.932 |
1.920 |
1.920 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
scheelite synthetic |
1.92 |
1.936 |
0.016 |
0.016 |
5.9 |
6.11 |
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
scheelite synthetic |
1.92 |
1.937 |
0.017 |
0.017 |
5.9 |
6.1 |
|
|
|
|
Gemology Tools Professional 2010 |
scheelite synthetic |
1.936 |
1.922 |
0.016 |
0.017 |
5.9 |
6.1 |
1.936 |
1.938 |
1.918 |
1.922 |
http://www.geminterest.com |
synthetic scheelite |
1.92 |
1.938 |
0.015 |
0.017 |
5.95 |
6.15 |
|
|
|
|
Gemmo.eu
|
Scheelite |
1.918 |
1.937 |
0.016 |
0.017 |
6 |
6.1 |
|
|
|
|
John Sinkakas, Gemstone and mineral data book,1972 |
Scheelite |
1.918 |
1.935 |
0.015 |
0.016 |
6 |
6.3 |
1.934 |
1.935 |
1.918 |
1.920 |
Gemmological Tables, Ulrich Henn,
2004 |
Scheelite |
1.918 |
1.936 |
0.01 |
0.018 |
6.06 |
6.3 |
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
scheelite synthetic |
|
|
|
|
6.1 |
6.1 |
|
|
|
|
John Sinkakas, Gemstone and mineral data book,1972 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Scheelite |
blue |
O²-->W |
Alain Abréal, juillet 2002 |
Scheelite |
yellow |
Fe (not proven) |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Scheelite |
Sakangyi |
Mogok |
Mandalay |
Myanmar |
The Australian Gemmologist (2005) 22,
p308 |
Scheelite |
Turmalina Mine |
|
Piura Department |
Peru |
Hyrsl & Rosales (2003) Mineralogical
Record, 34, 241-254. |
Scheelite |
Embilipitiya |
Monaragata |
Southern Province |
Sri Lanka |
Gemmologie Jul 1999, p90 |
Scheelite |
|
Kern County |
California |
USA |
Gems & Gemology 1986 fall, p 166-169 |
CHEMICAL DATA
(%)