|
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 |
Chrysoberyl |
1.739 |
1.748 |
0.008 |
0.009 |
3.679 |
3.705 |
Colourless |
Sri Lanka |
|
1.739 |
1.742 |
|
|
1.747 |
1.748 |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2004 Mar, p33-37 |
Chrysoberyl |
1.739 |
1.749 |
0.01 |
0.01 |
3.69 |
3.69 |
colourless |
|
5.13ct |
|
|
|
|
|
|
no features |
inert |
weak reddish orange |
GIA Gem Database 33800 |
Chrysoberyl |
1.74 |
1.75 |
0.008 |
0.01 |
3.7 |
3.71 |
yellowish green, green |
Ilakaka, Madagascar |
|
1.740 |
1.740 |
|
|
1.748 |
1.750 |
typical Fe³+ |
|
|
Gems & Gemology 2002 fall p 261 |
Chrysoberyl - Alexandrite |
1.74 |
1.763 |
0.009 |
0.01 |
3.7 |
3.78 |
|
Hematita, Minas Gerais, Brazil |
|
1.740 |
1.752 |
|
|
1.750 |
1.763 |
Cr |
weak red |
weak to moderate red |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft 1987 Nr 3/4 p121-131 |
Chrysoberyl |
1.74 |
1.749 |
0.009 |
0.009 |
3.71 |
3.71 |
colourless |
Mogok, Birma |
|
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2004 Sep, p63 |
Chrysoberyl |
1.74 |
1.749 |
0.009 |
0.009 |
|
|
mint green |
Tundura-Songea, Tanzania |
10 ct, coloured by V³+ |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1997 Jun, p63 |
Chrysoberyl |
1.74 |
1.749 |
0.009 |
0.009 |
3.69 |
3.69 |
highly saturated green |
Mali |
4.29ct, Vanadium-Bearing |
|
|
|
|
|
|
440 nm cutoff |
inert |
inert |
Gems & Gemology 2003 Summer,p144 |
Chrysoberyl |
1.741 |
1.75 |
0.009 |
0.009 |
3.71 |
3.71 |
colourless |
Sri Lanka |
|
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1999 Jul p106 |
Chrysoberyl |
1.741 |
1.75 |
0.009 |
0.009 |
3.72 |
3.72 |
greenish brown |
Sri Lanka |
|
|
|
|
|
|
|
violet absorption |
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1998 Sep, p169 |
Chrysoberyl |
1.741 |
1.749 |
0.008 |
0.008 |
|
|
dark green |
Tunduru, Tanzania |
3.65ct, colored by vanadium |
|
|
|
|
|
|
a band at 600 nm |
inert |
inert |
Gems & Gemology 1998 Fall, p212-213 |
Chrysoberyl |
1.742 |
1.751 |
0.008 |
0.009 |
3.71 |
3.72 |
mint green |
Tanzania |
vanadium bearing |
|
|
|
|
|
|
440-445nm band |
inert to faint yellow |
inert to faint orange |
Gems & Gemology 1996 fall p215-216 |
Chrysoberyl |
1.742 |
1.757 |
0.008 |
0.015 |
3.71 |
3.73 |
brown, brownish-green, greenish yellow |
Elahera, Sri Lanka |
|
1.742 |
1.742 |
1.748 |
1.748 |
1.757 |
1.757 |
504, 495, 485, 445 (strong) |
inert |
inert |
Gems & Gemology 1986 Summer, p91 |
Chrysoberyl - Alexandrite |
1.742 |
1.751 |
0.009 |
0.009 |
3.64 |
3.64 |
|
Franquiera, Spain |
|
1.742 |
1.742 |
1.746 |
1.746 |
1.751 |
1.751 |
|
|
|
The Journal of Gemmology 1997 Vol 25, N°5, p340-357 |
Chrysoberyl - Alexandrite |
1.742 |
1.759 |
0.007 |
0.008 |
3.68 |
3.72 |
change colour from blue-green to reddish violet and orangy red |
Minaçu, Goias, Brazil |
|
1.742 |
1.752 |
1.744 |
1.754 |
1.748 |
1.759 |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 2010 59/3-4, p71-81 |
Chrysoberyl - Alexandrite |
1.743 |
1.755 |
0.008 |
0.009 |
3.72 |
3.74 |
colour change: bluish-green to violet-red |
Serra Dourada, Minacu, Brazil |
translucent |
1.743 |
1.746 |
1.746 |
1.748 |
1.751 |
1.755 |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1997 Sep, p125 |
Chrysoberyl - Alexandrite |
1.743 |
1.749 |
0.006 |
0.006 |
3.71 |
3.71 |
bluish green, colour-change |
|
3.43ct |
|
|
|
|
|
|
broad absorption below 450nm and between 550-580, lines at 478, 652,
657,6 82 |
inert |
inert |
GIA Gem Database 33805 |
Chrysoberyl |
1.743 |
1.754 |
0.011 |
0.011 |
3.72 |
3.72 |
light green |
|
1.97 ct |
1.743 |
1.743 |
1.748 |
1.748 |
1.754 |
1.754 |
|
weak yellow |
inert |
ACAM lab
3741 |
Chrysoberyl |
1.744 |
1.749 |
0.008 |
0.009 |
3.7 |
3.72 |
yellow to yellowish-green and yellowish-brown |
Madagascar |
|
1.744 |
1.749 |
1.747 |
1.752 |
1.752 |
1.758 |
|
|
|
The Journal of Gemmology 2001 Vol27, N°7,p385-394 |
Chrysoberyl |
1.744 |
1.751 |
0.007 |
0.007 |
3.76 |
3.76 |
yellow |
|
3.34 ct |
1.744 |
1.744 |
1.748 |
1.748 |
1.751 |
1.751 |
|
inert |
inert |
ACAM lab
2048 |
Chrysoberyl |
1.744 |
1.752 |
0.008 |
0.008 |
3.55 |
3.55 |
grayish-yellowish-green (mint-green) |
Tanzania |
0.71ct |
|
|
|
|
|
|
|
inert |
inert |
http://www.spec4gem.info/index.php 2016 |
Chrysoberyl - Alexandrite |
1.745 |
1.755 |
0.01 |
0.01 |
3.7 |
3.72 |
|
Elahera, Sri Lanka |
|
1.745 |
1.745 |
1.749 |
1.749 |
1.755 |
1.755 |
680, 678, 665, 655, 649, 640 to 560,
473, 468 |
weak reddish |
weak reddish |
Gems & Gemology 1986 Summer, p91 |
Chrysoberyl - Alexandrite |
1.745 |
1.754 |
0.008 |
0.01 |
3.71 |
3.71 |
|
Lake Manyare, Tanzania |
|
1.745 |
1.745 |
1.750 |
1.750 |
1.754 |
1.754 |
|
weak yellowish |
medium dull red |
Gems & Gemology 1976 Fall, p203-209 |
Chrysoberyl - Alexandrite |
1.745 |
1.77 |
0.008 |
0.011 |
3.65 |
3.77 |
|
Novello deposit, Masvingo District, Zimbabwe |
|
1.745 |
1.759 |
1.748 |
1.763 |
1.753 |
1.770 |
|
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1967 Heft 61, p33-49 |
Chrysoberyl - Alexandrite |
1.745 |
1.751 |
0.006 |
0.006 |
3.72 |
3.72 |
green-blue, colour-change |
Hematita Mine, Nova Era, Minas Gerais,
Brazil |
2.68ct |
|
|
|
|
|
|
broad absorption below 450nm and between 560-600, lines at 473, 478, 645,
655, 678, 680 |
inert |
weak red |
GIA Gem Database 34313 |
Chrysoberyl - Alexandrite |
1.745 |
1.753 |
0.008 |
0.008 |
3.82 |
3.82 |
green, colour change |
|
0.61ct |
1.745 |
1.745 |
1.748 |
1.748 |
1.753 |
1.753 |
|
light red |
red |
ACAM lab
2071 |
Chrysoberyl |
1.745 |
1.751 |
0.006 |
0.006 |
3.73 |
3.73 |
greenish yellow |
Myanmar |
6.28ct |
|
|
|
|
|
|
band at 445-455nm |
inert |
inert |
GIA Gem Database 33799 |
Chrysoberyl - Alexandrite |
1.745 |
1.751 |
0.006 |
0.006 |
3.73 |
3.73 |
dark bluish violet, colour change |
Ural Mts, Russia |
2.85ct |
|
|
|
|
|
|
lines at 472, 476, 680, 682nm, cut-off at 450nm |
inert |
weak red |
GIA Gem Database 33809 |
Chrysoberyl |
1.748 |
1.755 |
0.007 |
0.007 |
3.72 |
3.72 |
yellowish orange |
Ratnapura, Sabaragamuwa, Sri Lanka |
10.15ct |
|
|
|
|
|
|
broad absorption below 520nm and
between 434-450 nm |
inert |
inert |
GIA Gem Database 34792 |
Chrysoberyl - Alexandrite |
1.749 |
1.759 |
0.01 |
0.01 |
3.644 |
3.663 |
purplish red and bluish green |
Tokovaia, Ural Mts, Russia |
|
1.749 |
1.749 |
1.753 |
1.753 |
1.759 |
1.759 |
|
|
|
The Journal of Gemmology 1997 Vol 25, N°5, p354 |
Chrysoberyl - Alexandrite |
1.75 |
1.75 |
0 |
0 |
3.74 |
3.74 |
brownish green in fluorescent
light to brownish purple in incandescent light |
|
21.22ct cabochon, cat's-eye, RI spot |
|
|
|
|
|
|
|
|
|
Gems & Gemology 2017 winter, p459 |
Chrysoberyl |
1.751 |
1.759 |
0.008 |
0.008 |
3.75 |
3.75 |
greenish yellow |
Ratnapura, Sabaragamuwa, Sri Lanka |
5.25ct |
|
|
|
|
|
|
broad absorption below 520nm and
between 435-460 nm |
inert |
inert |
GIA Gem Database 34794 |
Chrysoberyl |
1.751 |
1.759 |
0.008 |
0.008 |
3.75 |
3.75 |
greenish yellow |
Ratnapura, Sri Lanka |
5.25ct |
|
|
|
|
|
|
band at 435-460nm |
inert |
inert |
GIA Gem Database 34797 |
Chrysoberyl |
1.756 |
1.768 |
0.012 |
0.012 |
3.74 |
3.74 |
yellowish green |
|
|
1.756 |
1.756 |
1.761 |
1.761 |
1.768 |
1.768 |
broad band from 425 to 458 nm |
inert |
inert |
The Australian Gemmologist 1984 Vol 15,
N°7, p241-242 |
Chrysoberyl |
1.759 |
1.769 |
0.01 |
0.01 |
|
|
greenish yellow |
Malawi |
0.80 and 1.05ct |
|
|
|
|
|
|
|
|
|
Gems & Gemology 2001 Winter, p 319 |
Chrysoberyl |
1.76 |
1.771 |
0.011 |
0.011 |
3.75 |
3.75 |
greenish brown |
Sri Lanka |
|
|
|
|
|
|
|
violet absorption |
|
|
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1998 Sep, p169 |
Chrysoberyl |
1.765 |
1.778 |
0.013 |
0.013 |
3.72 |
3.72 |
green |
|
|
1.765 |
1.772 |
|
|
1.772 |
1.778 |
|
|
|
The Journal of Gemmology 1978 N°4, p229-231 |
Chrysoberyl |
1.77 |
|
|
|
3.75 |
3.75 |
|
|
iron-rich chrysoberyl cat’s-eye, 9.90 wt.% Fe2O3 |
|
|
|
|
|
|
|
|
|
Journal of the Gemmological Society of Japan 1994 Vol19, p31-32 |
Chrysoberyl |
1.78 |
1.793 |
0.013 |
0.013 |
3.81 |
3.81 |
slightly yellowish green |
|
4.85ct cabochon, cat's-eye, extremely high RI and SG caused by high Fe
content |
|
|
|
|
|
|
|
inert |
inert |
Gems & Gemology 2001 Winter, p319 |
Chrysoberyl |
|
|
|
|
3.72 |
3.72 |
yellow-green |
Ratnapura, Sabaragamuwa, Sri Lanka |
16.02, cabochon, cat's eye |
|
|
|
|
|
|
broad absorption below 460nm |
inert |
inert |
GIA Gem Database 34800 |
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 |
Chrysoberyl |
1.739 |
1.77 |
0.007 |
0.011 |
3.71 |
3.76 |
1.739 |
1.760 |
1.742 |
1.764 |
1.748 |
1.770 |
Gemmological Tables, Ulrich Henn,
2004 |
Chrysoberyl - Alexandrite |
1.739 |
1.759 |
0.008 |
0.011 |
3.64 |
3.8 |
1.739 |
1.749 |
1.748 |
1.753 |
1.749 |
1.759 |
http://www.geminterest.com |
Chrysoberyl |
1.739 |
1.76 |
0.007 |
0.011 |
3.71 |
3.75 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
Chrysoberyl |
1.739 |
1.77 |
0.007 |
0.012 |
3.68 |
3.8 |
1.739 |
1.759 |
1.742 |
1.764 |
1.748 |
1.770 |
Tables of Gemstone Identification, Roger Dedeyne,
Ivo Quintens, 2007 |
Chrysoberyl |
1.74 |
1.77 |
0.007 |
0.012 |
3.5 |
3.84 |
1.740 |
1.759 |
|
|
1.745 |
1.770 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Chrysoberyl |
1.74 |
1.77 |
0.008 |
0.012 |
3.68 |
3.8 |
|
|
|
|
|
|
http://www.gemmology.be |
Chrysoberyl |
1.74 |
1.77 |
0.007 |
0.012 |
3.68 |
3.8 |
1.740 |
1.765 |
1.747 |
1.772 |
1.745 |
1.770 |
http://www.geminterest.com |
Chrysoberyl |
1.74 |
1.77 |
0.008 |
0.012 |
3.68 |
3.8 |
1.740 |
1.759 |
1.747 |
1.764 |
1.745 |
1.770 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Chrysoberyl - Alexandrite |
1.74 |
1.75 |
0.008 |
0.01 |
3.71 |
3.75 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Chrysoberyl |
1.74 |
1.759 |
0.008 |
0.01 |
3.71 |
3.75 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Chrysoberyl |
1.74 |
1.775 |
0.007 |
0.012 |
3.66 |
3.82 |
|
|
|
|
|
|
Gemmo.eu
|
Chrysoberyl |
1.742 |
1.76 |
0.008 |
0.01 |
3.7 |
3.75 |
1.742 |
1.750 |
|
|
1.750 |
1.760 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Chrysoberyl - Alexandrite |
1.745 |
1.759 |
0.009 |
0.01 |
3.64 |
3.8 |
|
|
|
|
|
|
http://www.gemmology.be |
Chrysoberyl - Alexandrite |
1.745 |
1.759 |
0.009 |
0.01 |
|
|
1.745 |
1.749 |
1.748 |
1.753 |
1.755 |
1.759 |
Joel Arem, Color Encyclopedia of Gemstones,
1987 |
Chrysoberyl |
1.745 |
1.76 |
0.008 |
0.01 |
3.68 |
3.8 |
|
|
|
|
|
|
John Sinkakas, Gemstone and mineral data
book,1972 |
Chrysoberyl - Alexandrite |
1.746 |
1.76 |
0.007 |
0.011 |
3.71 |
3.75 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
Chrysoberyl |
1.75 |
1.76 |
0.008 |
0.01 |
3.71 |
3.72 |
|
|
|
|
|
|
Gems, R Webster, 5th edition 1994 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Chrysoberyl |
yellow |
Fe³+ in octahedral coordination |
Gems & Gemology Summer 1988 |
Chrysoberyl - Alexandrite |
colour-change |
Cr³+ in octahedral coordination |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
Inclusion |
Stone |
Reference |
actinolite |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
actinolite |
Chrysoberyl |
Gubelin, Photoatlas Vol 2 (2005); The Australian
Gemmologist 1987 May p 217-220 |
alabandite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
albite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
amphibole |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
andalusite |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
anorthite |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
anthophyllite |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
apatite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
apatite |
Chrysoberyl - Alexandrite |
Gemmological Tables, Ulrich Henn , GGA, 2004 |
biotite |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
brucite |
Chrysoberyl - Alexandrite |
The Journal of Gemmology 1995,24,8, p577 |
calcite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
calcite |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
chlorite |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
chlorite |
Chrysoberyl - Alexandrite |
The Australian Gemmologist, May 1987, p 218 |
columbite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
diopside |
Chrysoberyl - Alexandrite |
The Journal of Gemmology 1995,24,8, p577 |
ferrocolumbite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
fluorite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
fluorite |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
goethite |
Chrysoberyl - Alexandrite |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft , Nr 3/4, p126 |
hematite |
Chrysoberyl |
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995, Dez, p91 |
ilmenite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions
in Gemstones, volume 2 (2005) |
limonite |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
mica |
Chrysoberyl - Alexandrite |
Gemmological Tables, Ulrich Henn , GGA, 2004 |
monazite |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
muscovite |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
oligoclase |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
orthoclase |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
phlogopite |
Chrysoberyl - Alexandrite |
Gubelin, Photoatlas of inclusions, Vol 2, 1995; The
Australian Gemmologist, May 1987, p 218 |
quartz |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions
in Gemstones, volume 2 (2005) |
rutile |
Chrysoberyl - Alexandrite |
Gemmological Tables, Ulrich Henn , GGA, 2004 |
sillimanite |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
spessartine |
Chrysoberyl |
E.J. Gübelin and J.I. Koivula, Photoatlas of
inclusions in Gemstones, volume 2 (2005) |
talc |
Chrysoberyl |
The Australian Gemmologist 1987 May p 217-220 |
zircon |
Chrysoberyl - Alexandrite |
E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions
in Gemstones, volume 2 (2005) |
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
alexandrite-Chrysoberyl |
|
Dowerin |
Western Australia |
Australia |
MinMag 66(6):985-1002 |
alexandrite-Chrysoberyl |
Carnaiba Mine, Pindobaçu |
Campo Formoso District |
Bahia |
Brazil |
Gems & Gemology 1988 Spring |
Chrysoberyl |
|
Jaqueto |
Bahia |
Brazil |
Lapis 2000/4 |
alexandrite-Chrysoberyl |
Pela Ema |
Porangatu |
Goias |
Brazil |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Santa Maria de Itabira |
Goias |
Brazil |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Uruaçu |
Goias |
Brazil |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Faisca Mine (Ziemer Mine) |
Americana Valley |
Minas Gerais |
Brazil |
Gems & Gemology 1988 Spring |
alexandrite-Chrysoberyl |
Faisca Mine (Ziemer Mine) |
Americana Valley |
Minas Gerais |
Brazil |
Gems & Gemology 1988 Spring |
alexandrite-Chrysoberyl |
Hematita |
Antonio Dias |
Minas Gerais |
Brazil |
Gems & Gemology 1988 Spring |
Chrysoberyl |
Americana River Valley, Padre Paraiso |
Araçuai |
Minas Gerais |
Brazil |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Santana River Valley, Padre Paraiso |
Araçuai |
Minas Gerais |
Brazil |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Esmeraldas de Ferros |
Minas Gerais |
Brazil |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1993, Mar, p7-15 |
Chrysoberyl |
Corrego
do Fogo |
Malacacheta |
Minas Gerais |
Brazil |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Corrego
do Fogo |
Malacacheta |
Minas Gerais |
Brazil |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Setubal River |
Malacacheta |
Minas Gerais |
Brazil |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Soturno River |
Malacacheta |
Minas Gerais |
Brazil |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Barro Preto Mine |
Santana Valley |
Minas Gerais |
Brazil |
Gems & Gemology 1988 Spring |
Chrysoberyl |
Colatina |
Espirito Santo |
Southeast Region |
Brazil |
www.mindat.org |
alexandrite-Chrysoberyl |
|
Addatigala |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Addatigala |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Chintapalli |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Godavari |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
|
Godavari |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Khammam |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
|
Khammam |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Nellore |
Andhra Pradesh |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Srikakulam |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Srikakulam |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Srikakulam district |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
|
Srikakulam district |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Araku, Eastern Ghats Belt |
Visakhapatnam District |
Andhra Pradesh |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Araku, Eastern Ghats Belt |
Visakhapatnam District |
Andhra Pradesh |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Narsipatnam |
Visakhapatnam District |
Andhra Pradesh |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Narsipatnam |
Visakhapatnam District |
Andhra Pradesh |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
|
Vizianagaram |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
|
Vizianagaram |
Andhra Pradesh |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Jagdalpur |
Deobhog |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Latapara |
Deobhog |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Mainpur |
Deobhog |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Mainpur |
Deobhog |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Matrapara |
Deobhog |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Sendmuda |
Deobhog |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Raipur District |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
|
Raipur District |
Chattisgarh (Chhattisgarh) |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
|
Trivandrum |
Kerala (Travancore) |
India |
Dana's New Mineralogy, 8th edition, Richard V.Gaines
e.a., 1997 |
Chrysoberyl |
Jerapani |
Balangir |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Sarapali |
Balangir |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Boudh |
Boudh |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Ramgarh |
Boudh |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Siminiguda |
Kalahandi |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Sirjapali |
Kalahandi |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Tundla |
Kalahandi |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Belghar |
Phulabani |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Dakalguda |
Ranigurha |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Dakalguda |
Ranigurha |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Hatamuniguda |
Rayagada |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Karlagati |
Rayagada |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Paikdakulgudu |
Rayagada |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Meghpal Ranchipada |
Sambalpur |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
|
Sinapali |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Sonepur |
Subarnapur |
Orissa |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Dharapuram |
Didigul-Anna |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Dharapuram |
Didigul-Anna |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Kangayam |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Kanyakumari |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
|
Karur |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Karur |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Oddanchattram |
Madurai |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Oddanchattram |
Madurai |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
|
Palni |
Tamil Nadu |
India |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Arumanai |
Tirunelveli |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Karakonam |
Tirunelveli |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Midolam |
Tirunelveli |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Polukal |
Tirunelveli |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p 313 |
Chrysoberyl |
Ankazobe Department, Ankazobe Pegmatite Field |
Central Merina Region |
Antananarivo Province |
Madagascar |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Ambositra Department |
Amoron'i Mania Region |
Fianarantsoa Province |
Madagascar |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Ilakaka gem deposit, Ilakaka,
Departementa Ranohira |
Horombe region |
Fianarantsoa Province |
Madagascar |
Extra Lapis No 17 |
alexandrite-Chrysoberyl |
Ilakaka gem deposit, Ilakaka,
Departementa Ranohira |
Horombe region |
Fianarantsoa Province |
Madagascar |
www.mindat.org |
Chrysoberyl |
|
Ambatondrazaka |
Toamasina (Tamatave) Province |
Madagascar |
Lapis 2000/4 |
Chrysoberyl |
|
Mogok |
Mandalay |
Myanmar |
Gems & Gemology 2000 winter p 313 |
alexandrite-Chrysoberyl |
Malyshevskoye Deposit, Izumrudnye Kopi, Tokovaya
River, Asbest |
Sverdlovskaya Oblast' |
Oural Mts |
Russia |
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1995, Dez, p 93 |
Chrysoberyl |
Laggola |
Polonnaruwa |
|
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Avissawella |
Kegalla |
Central Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Kuruwitenna |
Nuwara Eliya |
Central Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Elahera |
Polonnaruwa |
Central Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Kaluganga Valley |
Polonnaruwa |
Central Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Balangoda |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Eheliyagoda |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Pelmadulla |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Pelmadulla |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Rakwana |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Rakwana |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Ratnapura |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Ratnapura |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Walawe |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
|
Galle |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Ambalantota |
Hambantota |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Alutgama |
Kalutara |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Horana |
Kalutara |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Akuressa |
Matara |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Akuressa |
Matara |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Deniyaya |
Matara |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Morawaka |
Matara |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
Chrysoberyl |
Embilipitiya |
Monaragata |
Southern Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
|
Pattara |
Southern Province |
Sri Lanka |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Haputale |
Badulla |
Uva Province |
Sri Lanka |
Gems & Gemology winter 2000 p313 |
alexandrite-Chrysoberyl |
Magara |
Lake Manyara |
Arusha Region |
Tanzania |
Emeralds of the World English extraLapis Vol. 2 2002
pp24-35 |
Chrysoberyl |
|
Lumesule River |
Mtwara Region |
Tanzania |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
|
Tunduru |
Ruvuma Region |
Tanzania |
www.mindat.org |
Chrysoberyl |
Green Walking Stick, Mwami |
Karoi (Urungwe; Hurungwe) District |
Mashonaland West |
Zimbabwe |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Haslemere, Mwami |
Karoi (Urungwe; Hurungwe) District |
Mashonaland West |
Zimbabwe |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Pearl, Mwami |
Karoi (Urungwe; Hurungwe) District |
Mashonaland West |
Zimbabwe |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Spider, Mwami |
Karoi (Urungwe; Hurungwe) District |
Mashonaland West |
Zimbabwe |
Gems & Gemology Fall 2010, p204 |
alexandrite-Chrysoberyl |
Novello Claims, Bikita, Bikita, Masvingo (Fort
Victoria) |
Masvingo District |
Mashonaland West |
Zimbabwe |
Gemmologie, Zeitschrift der Deutschen
Gemmologischen Gesellschaft |
alexandrite-Chrysoberyl |
Somabula |
Gweru (Gwelo) District |
Midlands Province |
Zimbabwe |
Gems & Gemology Fall 2010, p204 |
Chrysoberyl |
Somabula |
Gweru (Gwelo) District |
Midlands Province |
Zimbabwe |
Gems & Gemology Fall 2010, p204 |
CHEMICAL DATA
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MnO |
MgO |
FeO |
TiO2 |
CaO |
Na2O |
Cr2O3 |
V2O3 |
Fe2O3 |
BeO |
K2O |
NiO |
Ga2O3 |
|
Chrysoberyl - Alexandrite |
|
Carnaiba |
Brazil |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
0.44 |
0.03 |
2.21 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
Hematita |
Brazil |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
0.4 |
0.02 |
1.23 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
Malacacheta |
Brazil |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
0.5 |
0.035 |
0.5 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
Minaçu |
Brazil |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 2010, Nr 3/4, p79 |
|
81.6 |
|
|
|
0.3 |
|
|
0.36 |
|
0.67 |
|
|
|
0.04 |
Chrysoberyl - Alexandrite |
cat's eye |
|
East Africa |
The Journal of Gemmology 1995, Vol 24, N°8, p 574 |
0.5 |
78.76 |
|
|
1.36 |
|
0.3 |
|
0.18 |
|
|
18.85 |
|
|
|
Chrysoberyl |
yellowish green |
Ilakaka |
Madagascar |
Gems & Gemology 2002 Fall |
|
78.83 |
0.01 |
|
|
0.04 |
|
|
0.06 |
0.02 |
1.07 |
|
|
|
|
Chrysoberyl |
green |
Ilakaka |
Madagascar |
Gems & Gemology 2002 Fall |
|
78.74 |
0.01 |
|
|
0.1 |
|
|
0.12 |
0.05 |
1.04 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
|
Madagascar |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
0.19 |
|
0.47 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
Tokowaja |
Russia |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
0.82 |
0.035 |
0.94 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
Franqueira |
Spain |
The Journal of Gemmology 1997, Vol 25, N°5 p 351 |
0.13 |
|
0.02 |
0.07 |
0.88 |
0.24 |
0.01 |
0.02 |
1.49 |
0.05 |
|
|
0.01 |
0.02 |
|
Chrysoberyl - Alexandrite |
|
|
Sri Lanka |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
0.45 |
0.03 |
1.01 |
|
|
|
|
Chrysoberyl - Alexandrite |
|
Lake Manyara |
Tanzania |
Gems & Gemology 1976, Fall, p205 |
0.27 |
77.5 |
|
|
|
0.1 |
|
|
0.23 |
|
0.7 |
20 |
|
|
|
Chrysoberyl - Alexandrite |
|
Novello Claims |
Zimbabwe |
Zeitschrift der Deutschen Gemmologischen
Gesellschaft, 1987, Nr 3/4, p121-131 |
|
|
|
|
|
|
|
|
1.61 |
|
1.91 |
|
|
|
|