|
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 |
|
Apatite |
1,625 |
1,64 |
|
|
3,13 |
3,17 |
yellow to greenish yellow |
Hormuz Island, Iran |
2 to 4 ct |
|
|
|
|
|
inert |
inert |
The Journal of Gemmology
2016 Vol 35, No. 1, p6-7 |
|
Apatite |
1,627 |
1,63 |
0,003 |
0,003 |
3,21 |
3,21 |
bluish green |
Madagascar |
2.23ct |
|
|
|
|
487, 530, 576, 582, 590nm |
|
|
GIA Gem Database 35323 |
|
Apatite |
1,627 |
1,63 |
0,003 |
0,003 |
3,21 |
3,21 |
bluish green |
Madagascar |
2.23ct |
|
|
|
|
lines at 487, 530, 576,
582, 590nm |
inert |
inert |
GIA Gem Database 35325 |
|
Apatite |
1,629 |
1,631 |
0,002 |
0,002 |
3,21 |
3,21 |
colourless |
Kazakhstan |
0.25 ct |
|
|
|
|
lines in the green |
bluish |
yellowish |
ACAM Lab N°923 |
|
Apatite |
1,629 |
1,632 |
0,003 |
0,003 |
3,21 |
3,21 |
violetish purple |
Pulsifer Quarry, Auburn,
Maine, USA |
2.64ct |
|
|
|
|
no features |
inert |
inert |
GIA Gem Database 35160 |
|
Apatite |
1,63 |
1,633 |
0,003 |
0,003 |
3,15 |
3,15 |
green |
|
|
|
|
|
|
|
|
|
ACAM labo |
|
Apatite |
1,63 |
1,63 |
|
|
3,2 |
3,2 |
yellow-brown, cat's-eye |
Madagascar |
5.7 ct |
|
|
|
|
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2000 Jun 2000, p61 |
|
Apatite |
1,63 |
1,634 |
0,004 |
0,004 |
3,19 |
3,19 |
greenish blue |
Mogok, Myanmar |
4.80ct |
|
|
|
|
|
weak yellow |
|
GIA Gem Database 34648 |
|
Apatite |
1,63 |
1,635 |
0,005 |
0,005 |
3,22 |
3,22 |
bluish green |
Madagascar |
5.12ct |
|
|
|
|
485, 530, 578, 584, 588,
591, 595nm |
|
|
GIA Gem Database 34325 |
|
Apatite |
1,63 |
1,634 |
0,004 |
0,004 |
3,37 |
3,37 |
yellow |
Cerro de Marcado Mine,
Victoria de Durango, Durango, Mexico |
16.69ct |
|
|
|
|
530, 577, 582, 588, 594 |
weak orangy yellow |
|
GIA Gem Database 33765 |
|
Apatite |
1,63 |
1,636 |
0,006 |
0,006 |
3,17 |
3,17 |
light blue |
|
0.24 ct |
|
|
|
|
lines in the green |
inert |
inert |
ACAM Lab N°2025 |
|
Apatite |
1,63 |
1,64 |
0,01 |
0,01 |
3,2 |
3,2 |
green |
|
0.89 ct |
|
|
|
|
mines in the yellow |
inert |
inert |
ACAM Lab N°4773 |
|
Apatite |
1,63 |
1,639 |
0,009 |
0,009 |
3,28 |
3,28 |
yellow |
|
1.22ct |
|
|
|
|
|
orange |
yellow |
ACAM Lab N°147 |
|
Apatite |
1,63 |
1,632 |
0,002 |
0,002 |
3,24 |
3,24 |
green |
|
0.41ct |
|
|
|
|
lines in the green |
inert |
inert |
ACAM Lab N°564 |
|
Apatite |
1,63 |
1,635 |
0,004 |
0,005 |
3,17 |
3,17 |
yellowish green |
Nhamatanda, Mozambique |
10.61ct and 3.88ct |
|
|
|
|
|
weak yellow |
inert |
The Journal of Gemmology
2015 Vol 38, No 8, p654 |
|
synthetic apatite |
1,63 |
1,637 |
0,007 |
0,007 |
3,22 |
3,22 |
colour change :
purple-pink to violetish blue |
|
|
|
|
|
|
many lines |
inert |
inert |
Gems & Gemology 2001
Spring p 57 |
|
Apatite |
1,63 |
1,633 |
0,003 |
0,003 |
3,22 |
3,22 |
colourless |
Mogok, Myanmar |
6.50ct |
|
|
|
|
lines at 487, 530, 577,
band at 580-590 |
moderate violet |
moderate orange |
GIA Gem Database 34546 |
|
Apatite |
1,63 |
1,63 |
0 |
0 |
3,19 |
3,19 |
greenish blue,
translucent |
Myanmar |
11.29ct cabochon, RI spot |
|
|
|
|
line at 490nm |
weak yellowish green |
inert |
GIA Gem Database 34548 |
|
Apatite |
1,631 |
1,634 |
0,003 |
0,003 |
3,23 |
3,26 |
colour changing : pinkish
orange (daylight , greenish yellow (fluorescent light) |
Akzhailyau pegmatite,
Kazakhstan |
pink colour fades on
exposure to daylight |
|
|
|
|
didymium |
pink |
pink |
Gems & Gemology 2002
winter p350 |
|
Apatite |
1,631 |
1,638 |
0,007 |
0,007 |
3,24 |
3,24 |
greenish brown |
Sri Lanka |
4.17ct |
|
|
|
|
yellow absorption |
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1998 Sep, p169 |
|
Apatite |
1,631 |
1,635 |
0,005 |
0,005 |
3,2 |
3,2 |
yellow-green |
Mwami, Mashonaland West
Province, Zimbabwe |
25.27ct |
|
|
|
|
578, 587 nm |
|
|
GIA Gem Database 35251 |
|
Apatite |
1,631 |
1,635 |
0,004 |
0,004 |
3,24 |
3,24 |
light blue |
Madagascar |
|
|
|
|
|
lines in the green |
inert |
inert |
ACAM Lab N°1841 |
|
Apatite |
1,631 |
1,638 |
0,007 |
0,007 |
3,22 |
3,22 |
yellow |
Mexico |
4.26 ct |
|
|
|
|
lines in the green and
blue |
inert |
inert |
ACAM Lab N°928 |
|
Apatite |
1,631 |
1,635 |
0,004 |
0,004 |
3,23 |
3,23 |
blue |
|
1.06 ct |
|
|
|
|
|
inert |
inert |
ACAM Lab N°1437 |
|
Apatite |
1,631 |
1,636 |
0,005 |
0,005 |
3,21 |
3,21 |
greenish yellow |
|
9.42ct and 10.0ct |
|
|
|
|
doublet at 580nm, band at
525nm, lines at 480, 510, 600nm |
|
|
The Journal of Gemmology
2019 36(8), p683 |
|
Apatite |
1,632 |
1,636 |
0,004 |
0,004 |
3,21 |
3,21 |
green-blue |
Itongafeno, Mahaiza,
Antananarivo Province, Madagascar |
9.10ct |
|
|
|
|
578, 582, 590 nm, cut-off
670nm |
inert |
inert |
GIA Gem Database 34401 |
|
Apatite |
1,632 |
1,638 |
0,006 |
0,006 |
3,21 |
3,21 |
light blue |
Madagascar |
1.28 ct |
|
|
|
|
lines in the green |
inert |
inert |
ACAM Lab N°1842 |
|
Apatite |
1,632 |
1,638 |
0,006 |
0,006 |
3,28 |
3,28 |
blue |
|
1.31ct |
|
|
|
|
|
weak greenish |
inert |
ACAM Lab N°1023 |
|
Apatite |
1,632 |
1,64 |
0,008 |
0,008 |
3,15 |
3,15 |
blue |
|
0.18 ct |
|
|
|
|
|
inert |
inert |
ACAM Lab N°147 |
|
Apatite |
1,632 |
1,636 |
0,004 |
0,004 |
3,22 |
3,35 |
yellowish-green, green,
greenish brown to red-brown |
Umba Valley, Tanzania |
cat's-eyes |
|
|
|
|
|
|
|
The Journal of Gemmology
1983 Vol18, N°7, p592-595 |
|
Apatite |
1,634 |
1,638 |
0,004 |
0,004 |
3,22 |
3,22 |
green-blue |
Madagascar |
3.60ct |
|
|
|
|
band 580-595nm, line at
487nm |
inert |
inert |
GIA Gem Database 33785 |
|
Apatite |
1,634 |
1,638 |
0,004 |
0,004 |
3,2 |
3,2 |
green |
Sri Lanka |
17.09ct |
|
|
|
|
group of lines between
575 and 595 nm |
inert |
inert |
GIA Gem Database 34760 |
|
Apatite |
1,635 |
1,64 |
0,005 |
0,005 |
3,21 |
3,21 |
violetish purple |
Auburn, Maine, USA |
1.60ct |
|
|
|
|
|
|
|
GIA Gem Database 33779 |
|
Apatite |
1,635 |
1,64 |
0,005 |
0,005 |
3,13 |
3,13 |
dark blue |
Brazil |
2.35ct |
|
|
|
|
cut-off 420 and 600nm |
|
|
GIA Gem Database 35327 |
|
Apatite |
1,635 |
1,639 |
0,004 |
0,004 |
3,22 |
3,22 |
dark blue |
|
|
|
|
|
|
|
"dusty" green |
inert |
The Journal of Gemmology
1977 N°5, p235 |
|
Apatite |
1,635 |
1,64 |
0,005 |
0,005 |
3,21 |
3,21 |
violetish purple |
Pulsifer Quarry, Auburn,
Maine, USA |
1.60ct |
|
|
|
|
no features |
inert |
inert |
GIA Gem Database 33779 |
|
Apatite |
1,635 |
1,64 |
0,005 |
0,005 |
3,15 |
3,19 |
yellow |
Muranska Dlha Luka,
Slovakia |
|
|
|
|
|
|
inert |
inert |
The Journal of Gemmology
2022 38 (2), p114 |
|
Apatite |
1,636 |
1,64 |
0,004 |
0,004 |
3,21 |
3,21 |
blue |
|
|
|
|
|
|
|
|
|
ACAM labo |
|
Apatite |
1,636 |
1,64 |
0,004 |
0,004 |
3,24 |
3,24 |
greyish blue |
Mogok, Myanmar |
3.03ct |
|
|
|
|
|
weak green |
inert |
GIA Gem Database 33783 |
|
Apatite |
1,636 |
1,64 |
0,004 |
0,004 |
3,21 |
3,21 |
dark blue |
Itatiaia Mine,
Conselheiro Pena, Minas Gerais, Brazil |
4.94ct |
|
|
|
|
cut-off 420 and 580nm |
inert |
inert |
GIA Gem Database 34265 |
|
Apatite |
1,637 |
1,642 |
0,005 |
0,005 |
3,11 |
3,13 |
yellowish white |
Potosi department,
Bolivia |
opaque with transparent
core |
|
|
|
|
|
pale orange |
|
The Journal of Gemmology
1998 Vol26, N°1, p41-47 |
|
Apatite |
1,637 |
1,641 |
0,004 |
0,004 |
3,19 |
3,19 |
dark green |
Itatiaia Mine,
Conselheiro Pena, Minas Gerais, Brazil |
7.10ct |
|
|
|
|
|
inert |
inert |
GIA Gem Database 34266 |
|
Apatite |
1,638 |
1,64 |
0,002 |
0,002 |
3,2 |
3,2 |
green |
|
5.15 ct |
|
|
|
|
lines in the green |
inert |
inert |
ACAM Lab N°2179 |
|
Apatite |
1,638 |
1,642 |
0,004 |
0,004 |
3,16 |
3,16 |
blue |
|
0.19 ct |
|
|
|
|
|
|
|
ACAM Lab N°564 |
|
Apatite |
1,638 |
1,644 |
0,003 |
0,005 |
3,17 |
3,17 |
medium-dark to dark,
moderately strong, slightly yellowish green |
|
1.28ct and 3.78ct |
|
|
|
|
|
inert |
inert |
The Journal of Gemmology
2014 Vol 34, N°4, p 289-290 |
|
Apatite |
1,638 |
1,642 |
0,004 |
0,004 |
3,19 |
3,19 |
yellow-green |
Karoi, Zimbabwe |
15.54ct |
|
|
|
|
series of lines between
578-592nm |
inert |
inert |
GIA Gem Database 35267 |
|
Apatite |
1,64 |
1,64 |
|
|
3,16 |
3,16 |
greenish blue |
|
cabochon 5.72, cat's-eye,
translucent, spot RI |
|
|
|
|
weak band at 594-618 nm;
weak general absorption from 633 to 700 nm |
inert |
inert |
Gems & Gemology 1990
Fall,p230 |
|
Apatite |
1,64 |
1,646 |
0,006 |
0,006 |
3,21 |
3,21 |
dark bluish green |
Tanzania |
3.10ct |
|
|
|
|
band at 575-590nm |
inert |
inert |
GIA Gem Database 34999 |
|
Apatite |
1,641 |
1,65 |
0,009 |
0,009 |
3,27 |
3,27 |
greenish yellow |
Brazil |
1.47ct |
|
|
|
|
|
inert |
inert |
http://www.spec4gem.info/index.php
2015 |
|
Apatite |
1,644 |
1,655 |
0,005 |
0,006 |
3,14 |
3,2 |
emerald green |
Rössing, Namibia |
|
1,644 |
1,649 |
1,650 |
1,655 |
|
|
|
Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1988 37, Nr 1/2, p78-79 |
|
Apatite |
1,644 |
1,65 |
0,006 |
0,006 |
3,15 |
3,15 |
yellow |
Tanzania |
3.43ct |
|
|
|
|
|
inert |
inert |
http://www.spec4gem.info/index.php
2016 |
|
Apatite |
1,645 |
1,648 |
0,003 |
0,003 |
3,201 |
3,201 |
yellow |
Momeik (Molo) , Mogok,
Birma |
|
|
|
|
|
|
weak |
weak |
The Australian
Gemmologist 2005 22, p303-309 |
|
Apatite |
|
|
|
|
3,23 |
3,23 |
red-orange |
Mesa Grande, an Diego
County, California, USA |
6.33ct |
|
|
|
|
576, 580, 582, 586 nm |
yellowish orange |
weak orange |
GIA Gem Database 35161 |
|
Apatite |
|
|
|
|
|
|
reddish brown
(incandescent light) to greenish yellow-brown (daylight) |
Madagascar |
cabochon 584.22ct,
cat's-eye |
|
|
|
|
|
|
|
The Journal of Gemmology
2016 35 (3), p 186-188 |
TABLES
|
Stone |
RI
min |
RI
max |
Biref
min |
Biref
max |
Dens
min |
Dens
max |
ne
min |
ne
max |
no
min |
no
max |
Reference |
|
Apatite |
1.598 |
1.658 |
0.001 |
0.013 |
3.1 |
3.35 |
1.629 |
1.653 |
1.632 |
1.658 |
http://www.geminterest.com |
|
Apatite |
1.625 |
1.657 |
0.001 |
0.007 |
3.17 |
3.27 |
|
|
|
|
Gemmo.eu 2013 |
|
Apatite |
1.628 |
1.653 |
0.002 |
0.008 |
3.16 |
3.23 |
1.628 |
1.665 |
1.632 |
1.667 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
|
Apatite |
1.628 |
1.649 |
0.002 |
0.008 |
3.1 |
3.35 |
|
|
|
|
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
Apatite |
1.628 |
1.662 |
0.002 |
0.007 |
3.14 |
3.23 |
1.628 |
1.656 |
1.632 |
1.662 |
Gemmological Tables, Ulrich Henn,
2004 |
|
Apatite |
1.628 |
1.649 |
0.001 |
0.013 |
3.1 |
3.35 |
|
|
|
|
http://www.gemmology.be |
|
Apatite |
1.628 |
1.649 |
0.001 |
0.013 |
3.1 |
3.35 |
1.628 |
1.642 |
1.632 |
1.649 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Apatite |
1.628 |
1.658 |
0.001 |
0.007 |
3.1 |
3.35 |
1.628 |
1.653 |
1.629 |
1.658 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Apatite |
1.628 |
1.65 |
0.002 |
0.008 |
3.13 |
3.23 |
|
|
|
|
Gemology Tools Professional 2010 |
|
Apatite |
1.63 |
1.64 |
0.003 |
0.004 |
3.15 |
3.22 |
|
|
|
|
John Sinkakas,
Gemstone and mineral data book,1972 |
|
Apatite |
1.63 |
1.64 |
0.002 |
0.005 |
3.15 |
3.23 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Apatite |
1.63 |
1.64 |
0.002 |
0.004 |
3.17 |
3.23 |
|
|
|
|
Gems, R Webster,
5th edition 1994 |
|
synthetic apatite |
1.63 |
1.637 |
0.007 |
0.007 |
3.22 |
3.22 |
1.630 |
1.630 |
1.637 |
1.637 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
|
Wilkeite - apatite group |
1.636 |
1.65 |
0.01 |
0.01 |
3.12 |
3.23 |
|
|
|
|
Gemology Tools Professional 2010 |
CAUSE OF
COLOUR
|
Stone |
Colour |
Cause
of colour |
Reference |
|
Apatite |
blue |
natural
radiation induced color centers involving ions SO3- |
http://minerals.caltech.edu |
|
Apatite |
dark blue |
0˛- -> Mn5+ charge transfer |
Gems & Gemology Summer 1988 |
|
Apatite |
green |
natural
radiation induced color centers involving ions SiO3- |
http://minerals.caltech.edu |
|
Apatite |
pink |
F vacancy with a
trapped electron |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
|
Inclusion |
Stone |
Reference |
|
biotite |
Apatite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
goethite |
Apatite |
The Journal of Gemmology,
1995, Vol24, N°8 p 577 |
|
hematite |
Apatite |
The Journal of
Gemmology,2016, 35 (1), p6 |
|
ilmenite |
Apatite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
pyrrhotite |
Apatite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 3 |
|
rutile |
Apatite |
The Journal of Gemmology,
1995, Vol24, N°8 p 577 |
|
tourmaline |
Apatite |
The Journal of Gemmology,
1996,25,4, p269 |
LOCALITIES
|
STONE |
LOCALITIES |
REFERENCE |
|||
|
Apatite |
Bananeira |
Itambé |
Bahia |
Brazil |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Melkote |
Mysore |
Karnataka |
India |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Katteri |
Mysore |
Karnataka |
India |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Banjipadar |
Kalahandi |
Orissa |
India |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Peryasoagai |
Salem |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Kurumbapatti |
Salem |
Tamil Nadu |
India |
Gems & Gemology 2000 winter p324 |
|
Apatite |
|
|
Hormuz island |
Iran |
The Journal of
Gemmology 2016 Vol 35, No. 1, p6-7 |
|
Apatite |
|
Akzhailyau (Akjaylau Mts.; Akzhalau
Mts.) |
|
Kazakhstan |
Gems & Gemology 2002 winter p350 |
|
Apatite |
|
Milanoa |
Antsirana |
Madagascar |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Cerro de Mercado Mine, Victoria de
Durango |
Durango |
Durango |
Mexico |
Mineralien Welt 2001/4 |
|
Apatite |
Kyaukpyatthat |
Mogok |
Mandalay |
Myanmar |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Momeik |
Mogok |
Mandalay |
Myanmar |
The Australian Gemmologist (2005) 22,
p308 |
|
Apatite |
|
Kegalla |
Central Proviince |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
|
Kurunegalla |
Central Proviince |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Nalanda |
Matale |
Central Proviince |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Rakwana |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Balangoda |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Eheliyagoda |
Ratnapura |
Sabaragamuwa province |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Akuressa |
Matara |
Southern Province |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
|
Apatite |
Deniyaya |
Matara |
Southern Province |
Sri Lanka |
Gems & Gemology 2000 winter p324 |
CHEMICAL DATA
|
Stone |
Colour |
Locality |
Reference |
MgO |
FeO |
CaO |
Na2O |
F |
P2O5 |
Cl |
|
|
Apatite |
cat's eye |
|
East Africa |
The Journal of
Gemmology 1995, Vol 24, N°8, p 574 |
0.25 |
0.14 |
52.54 |
0.27 |
3.15 |
41.9 |
1.15 |