|
INVESTIGATIONS
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
Colour |
Locality |
Info |
nx min |
nx max |
ny min |
ny max |
nz min |
nz max |
Spectrum |
UVS |
UVL |
Reference |
Beryllonite |
1.549 |
1.554 |
0.005 |
0.005 |
2.85 |
2.85 |
colourless |
Oxford County, Maine, USA |
5.68ct |
|
|
|
|
|
|
|
|
|
GIA Gem Database 33936 |
Beryllonite |
1.55 |
1.55 |
|
|
2.8 |
2.8 |
white |
Afghanistan |
transparent, cat's-eye |
|
|
|
|
|
|
|
|
|
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1994 Dez, p105-106 |
Beryllonite |
1.55 |
1.56 |
0.01 |
0.01 |
2.88 |
2.88 |
colourless |
Oxford County, Maine, USA |
7.82ct |
|
|
|
|
|
|
|
|
|
GIA Gem Database 35350 |
Beryllonite |
1.55 |
1.56 |
0.01 |
0.01 |
2.82 |
2.82 |
colourless |
Brazil |
0.19ct |
1.550 |
1.550 |
1.556 |
1.556 |
1.560 |
1.560 |
|
inert |
inert |
ACAM Lab
874 |
Beryllonite |
1.551 |
1.56 |
0.009 |
0.009 |
2.86 |
2.86 |
|
Oxford County, Maine, USA |
8.12ct |
|
|
|
|
|
|
|
|
very weak green |
GIA Gem Database 33939 |
Beryllonite |
1.551 |
1.56 |
0.009 |
0.009 |
2.81 |
2.81 |
colourless |
Pakistan |
14.79ct |
|
|
|
|
|
|
|
inert |
inert |
The Journal of Gemmology 2017 Vol35, N°6, p469 |
Beryllonite |
1.551 |
1.56 |
0.009 |
0.009 |
2.82 |
2.82 |
colourless |
Stoneham, Maine, USA |
13.80ct |
|
|
|
|
|
|
no features |
inert |
inert |
GIA Gem Database 35173 |
TABLES
Stone |
RI
min |
RI
max |
Biref
min |
Biref
max |
Dens
min |
Dens
max |
nx
min |
nx max |
ny
min |
ny
max |
nz
min |
nz
max |
Reference |
Beryllonite |
1.549 |
1.563 |
0.008 |
0.011 |
2.76 |
2.84 |
|
|
|
|
|
|
Gemmo.eu
|
Beryllonite |
1.552 |
1.562 |
0.01 |
0.01 |
2.83 |
2.87 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Beryllonite |
1.552 |
1.562 |
0.009 |
0.009 |
2.8 |
2.85 |
1.552 |
1.552 |
1.558 |
1.558 |
1.561 |
1.562 |
http://www.geminterest.com |
Beryllonite |
1.552 |
1.562 |
0.009 |
0.01 |
2.8 |
2.87 |
1.552 |
1.552 |
|
|
1.561 |
1.562 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Beryllonite |
1.552 |
1.561 |
0.009 |
0.009 |
2.83 |
2.87 |
1.552 |
1.552 |
1.558 |
1.558 |
1.561 |
1.561 |
Gemmological Tables, Ulrich Henn,
2004 |
Beryllonite |
1.552 |
1.562 |
0.009 |
0.009 |
2.8 |
2.85 |
|
|
|
|
|
|
http://www.gemmology.be |
Beryllonite |
1.552 |
1.561 |
0.009 |
0.009 |
2.8 |
2.85 |
1.552 |
1.552 |
1.558 |
1.558 |
1.561 |
1.561 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Beryllonite |
1.552 |
1.561 |
0.009 |
0.009 |
2.77 |
2.85 |
|
|
|
|
|
|
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Beryllonite |
1.552 |
1.562 |
0.009 |
0.01 |
2.813 |
2.821 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Beryllonite |
1.553 |
1.562 |
0.009 |
0.009 |
2.8 |
2.85 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
Beryllonite |
1.553 |
1.562 |
0.009 |
0.009 |
2.79 |
2.85 |
|
|
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Beryllonite |
1.553 |
1.562 |
0.009 |
0.009 |
2.8 |
2.85 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
MINERAL
INCLUSIONS
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
Beryllonite |
Stoneham |
Oxford County |
Maine |
USA |
Joel Arem, Color Encyclopedia of Gemstones, 1987 |
CHEMICAL DATA