|
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 |
Forsterite synthetic |
1,629 |
1,67 |
0,041 |
0,041 |
3,25 |
3,25 |
bluish |
|
|
1,629 |
1,629 |
1,650 |
1,650 |
1,670 |
1,670 |
|
inert |
inert |
ACAM lab 4653 |
Forsterite synthetic |
1,63 |
1,67 |
0,04 |
0,04 |
3,15 |
3,15 |
pale to deep blue,
blue-green, green, pink, purple |
|
|
|
|
|
|
|
|
intense absorption up to
450nm, a weak one from there to 500nm, group of 3 bands at 530, 550, and 580
and band at 690 |
inert |
inert |
Gems & Gemology 1994
summer 102-108 |
Forsterite |
1,63 |
1,67 |
0,04 |
0,04 |
3,25 |
3,25 |
colourless |
Sri Lanka |
0.89ct |
1,630 |
1,630 |
1,648 |
1,648 |
1,670 |
1,670 |
|
inert |
inert |
ACAM lab 2276 |
Forsterite synthetic |
1,635 |
1,671 |
0,034 |
0,035 |
3,23 |
3,24 |
violet |
|
|
1,635 |
1,637 |
1,650 |
1,650 |
1,670 |
1,671 |
460-470nm band, 490 band,
diffuse lines at 510 and 520nm and a 570-580nm band |
weak greenish yellow |
very weak orangy yellow |
Gems & Gemology 1999
summer p139-141 |
Forsterite synthetic |
1,635 |
1,67 |
0,035 |
0,035 |
3,26 |
3,26 |
violet |
|
1.65ct; cause of colour:
Co |
|
|
|
|
|
|
Co-spectrum |
strong chalky white |
strong chalky white |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1999 Dez, p 234 |
Forsterite |
1,637 |
1,669 |
0,032 |
0,032 |
3,26 |
3,26 |
|
Pamir Mts,Tajikistan |
|
|
|
|
|
|
|
|
weak orangy pink |
weak red |
Gems & Gemology 2008
fall, p265 |
Forsterite |
1,638 |
1,677 |
0,039 |
0,039 |
3,27 |
3,27 |
colourless |
Mogok, Birma |
|
|
|
|
|
|
|
|
|
|
Gems & Gemology 2008
fall, p263-264 |
Forsterite |
1,638 |
1,67 |
0,032 |
0,032 |
3,25 |
3,25 |
colourless |
Luc Yen area, Vietnam |
0.44 and 0.54 ct |
|
|
|
|
|
|
|
weak violet |
inert |
The Journal of Gemmology
2017 Vol35, N°5, p388-389 |
Forsterite |
1,639 |
1,67 |
0,031 |
0,031 |
3,25 |
3,25 |
near colourless |
Sri Lanka |
|
|
|
|
|
|
|
495nm |
inert |
inert |
Gems & Gemology 1999
spring, p50 |
Forsterite |
1,64 |
1,673 |
0,032 |
0,032 |
3,29 |
3,29 |
colourless |
Sri Lanka |
6.20ct |
|
|
|
|
|
|
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1999 Jul p106 |
Forsterite |
1,645 |
1,68 |
0,035 |
0,035 |
3,3 |
3,3 |
colourless |
|
|
|
|
|
|
|
|
|
|
|
ACAM labo |
Peridot - forsterite |
1,645 |
1,68 |
0,035 |
0,035 |
3,3 |
3,3 |
yellowish green |
Mogok, Myanmar |
28.99ct |
|
|
|
|
|
|
lines at 453, 477, 495,
502nm |
inert |
inert |
GIA Gem Database 33879 |
Peridot - forsterite |
1,648 |
1,689 |
0,035 |
0,038 |
3,29 |
3,37 |
|
|
|
1,648 |
1,653 |
1,663 |
1,671 |
1,683 |
1,689 |
453, 477, 497 , weaker at
529 |
|
|
Gems & Gemology 2004
winter p288-302 |
Peridot - forsterite |
1,648 |
1,689 |
0,035 |
0,038 |
3,29 |
337 |
light yellow-green to
olive-green |
Nanga Parbat region,
Pakistan |
|
1,648 |
1,653 |
1,663 |
1,671 |
1,683 |
1,689 |
|
inert |
inert |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1995 Sep, p33-60 |
Peridot - forsterite |
1,648 |
1,689 |
0,03 |
0,041 |
3,24 |
3,36 |
rich olive green |
Pyaung-Gaung, Mogok,
Myanmar |
5 stones (5.18ct-7.52ct) |
|
|
|
|
|
|
|
inert |
inert |
Gems & Gemology 2021
winter, p318-337 |
Peridot - forsterite |
1,649 |
1,691 |
0,037 |
0,038 |
3,28 |
3,35 |
|
Arizona, USA |
|
1,649 |
1,653 |
1,669 |
1,671 |
1,686 |
1,691 |
|
|
|
The Journal of Gemmology
1998 Vol 26, 2,86-102 |
Peridot - forsterite |
1,649 |
1,688 |
0,036 |
0,036 |
3,29 |
3,29 |
light olivegreen |
Lanzarote, Canary
Islands, Spain |
91.4% forsterite |
|
|
|
|
|
|
|
|
|
Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1989 Apr, p40-41 |
Peridot - forsterite |
1,649 |
1,691 |
0,037 |
0,038 |
3,28 |
3,38 |
very dark brown to bright
lime green |
San Carlos Apache
Resevation, Gila County, Arizona, USA |
|
1,649 |
1,653 |
1,665 |
1,671 |
1,686 |
1,691 |
typical peridot |
|
|
Gems & Gemology 1981
Winter p205-214 |
Peridot - forsterite |
1,649 |
1,682 |
0,034 |
0,034 |
3,36 |
3,36 |
light yellowish green |
Mogok, Myanmar |
0.28ct |
|
|
|
|
|
|
|
inert |
inert |
ACAM Lab 1956 |
Peridot - forsterite |
1,65 |
1,688 |
0,037 |
0,038 |
3,33 |
3,35 |
medium light to medium
dark, yellowish-green to brownish-green of low saturation |
Lam Dong Province,
Vietnam |
5 stones : 1.60-5.56 ct; chelsea
: yellowish-green |
1,650 |
1,650 |
1,665 |
1,667 |
1,687 |
1,688 |
453, 473, 493nm |
|
|
The Journal of Gemmology
1995 Vol 24, N°5, p355-361 |
Peridot - forsterite |
1,65 |
1,685 |
|
|
|
|
brownish-green |
Norway |
1.97ct, 6-ray star |
|
|
|
|
|
|
band between the green
and the blue |
|
|
The Journal of Gemmology
1980 Vol 17, N°1, p1-4 |
Peridot - forsterite |
1,65 |
1,689 |
0,036 |
0,038 |
3,34 |
3,37 |
|
Pakistan |
1.99-12.41 ct |
1,650 |
1,653 |
1,668 |
1,671 |
1,688 |
1,689 |
|
|
|
Zeitschrift der Deutschen
Gemmologischen Gesellschaft 1994 Dez, p105 |
Peridot - forsterite |
1,65 |
1,69 |
0,038 |
0,039 |
3,32 |
3,36 |
yellowish green |
Sardinia, Italy |
biaxe+ |
1,650 |
1,652 |
1,669 |
1,670 |
1,688 |
1,690 |
450, 473, 490nm |
inert |
inert |
Gems & Gemology 2009
Summer, p130-133 |
Peridot - forsterite |
1,65 |
1,684 |
0,034 |
0,034 |
3,25 |
3,25 |
green |
Usambara Mts, Umba
District, Tanzania |
|
1,650 |
1,650 |
1,568 |
1,658 |
1,684 |
1,684 |
|
|
|
Gems & Gemology 1983
Summer p103-107 |
Peridot - forsterite |
1,65 |
1,688 |
0,037 |
0,038 |
3,33 |
3,35 |
yellowish green to
brownish green |
Vietnam |
|
1,650 |
1,650 |
1,665 |
1,667 |
1,687 |
1,688 |
453, 473, 493nm bands |
|
|
Gems & Gemology 1993
fall, p211-212 |
Peridot - synthetic |
1,65 |
1,68 |
0,03 |
0,03 |
3,3 |
3,3 |
pale green |
|
|
|
|
|
|
|
|
|
|
|
Gems & Gemology 1994
summer 102-108 |
Peridot - forsterite |
1,65 |
1,69 |
0,036 |
0,038 |
3,32 |
3,37 |
yellowish green to olive
green or brownish green |
Central Highlands,
Vietnam |
biaxial - |
1,650 |
1,652 |
1,665 |
1,669 |
1,686 |
1,690 |
|
inert |
inert |
Gems & Gemology 2012
Fall, p172 |
Peridot - forsterite |
1,65 |
1,703 |
0,036 |
0,036 |
3,28 |
3,49 |
Light yellowish green to
a darker, richer yellowgreen, olive green, and brownish green |
Vietnam |
|
1,650 |
1,667 |
1,665 |
1,669 |
1,686 |
1,703 |
bands at 455 and 484 nm
with total absorption below about 440 |
inert |
inert |
Gems & Gemology 2016
Fall, p 276-287 |
Peridot - forsterite |
1,65 |
1,685 |
0,035 |
0,035 |
3,36 |
3,36 |
yellowish green |
Zabaegad, Egypt |
18.72ct |
|
|
|
|
|
|
lines at 453, 477, 495,
502nm |
inert |
inert |
GIA Gem Database 33884 |
Peridot - forsterite |
1,65 |
1,68 |
0,03 |
0,03 |
3,34 |
3,34 |
yellowish green |
San Carlos, Arizona, USA |
5.92ct |
|
|
|
|
|
|
lines at 453, 477, 495,
502nm |
inert |
inert |
GIA Gem Database 35195 |
Peridot - forsterite |
1,651 |
1,687 |
0,036 |
0,036 |
3,35 |
3,35 |
|
Pakistan |
5.23-18.37ct |
1,651 |
1,651 |
1,669 |
1,669 |
1,687 |
1,687 |
bands 453, 477, 497nm |
inert |
inert |
Gems & Gemology 1994
winter, p275 |
Peridot - forsterite |
1,651 |
1,69 |
0,039 |
0,039 |
3,36 |
3,36 |
|
Sri Lanka |
|
1,651 |
1,651 |
1,660 |
1,660 |
1,690 |
1,690 |
|
|
|
The Journal of Gemmology
1985 Vol 19, No 8, p692-701 |
Peridot - forsterite |
1,651 |
1,688 |
0,037 |
0,037 |
3,39 |
3,39 |
yellowish green |
Zabargad Island, Egypt |
19.46ct, biaxial + |
|
|
|
|
|
|
broad absorption below
420nm, lines at 455, 475, 497nm |
inert |
inert |
GIA Gem Database 33885 |
Peridot - forsterite |
1,651 |
1,685 |
0,033 |
0,033 |
|
|
green |
Chihuahua, Mexico |
|
1,651 |
1,652 |
1,668 |
1,669 |
1,684 |
1,685 |
|
|
|
The Journal of Gemmology
1978 N°4, p236 |
Peridot - forsterite |
1,652 |
1,69 |
0,036 |
0,037 |
3,35 |
3,35 |
|
Eritrea |
|
1,652 |
1,653 |
|
|
1,688 |
1,690 |
Fe²+ spectrum |
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1999 Sep , p121 |
Peridot - forsterite |
1,652 |
1,69 |
0,034 |
0,036 |
3,34 |
3,36 |
|
Zhanjikou, Hebei
Province, ChinaChina |
91% forsterite - 9%
fayalite |
1,652 |
1,654 |
1,670 |
1,672 |
1,688 |
1,690 |
Fe²+ |
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1999 Jul p113-116 |
Peridot - forsterite |
1,652 |
1,688 |
0,036 |
0,036 |
3,34 |
3,35 |
yellowish green |
Cambodia |
biaxial + |
|
|
|
|
|
|
453, 473, 493nm lines |
inert |
inert |
The Australian
Gemmologist 2011 Apr-Jun, p152 |
Peridot - forsterite |
1,652 |
1,689 |
0,037 |
0,037 |
3,35 |
3,35 |
green |
Pakistan |
6.73ct, with vonsenite
inclusions |
1,652 |
1,652 |
1,671 |
1,671 |
1,689 |
1,689 |
|
inert |
inert |
ACAM Lab |
Peridot - forsterite |
1,652 |
1,689 |
0,037 |
0,037 |
3,33 |
3,33 |
green |
Arizona, USA |
1.29ct, chalcopyrite
inclusions |
1,652 |
1,652 |
1,670 |
1,670 |
1,689 |
1,689 |
band at 496.0 nm and a weaker zone at 488.0
nm. A line is visible at 473.0 nm, while a weak band, centred at 452.0 |
|
|
The Journal of Gemmology
1987 Vol20, N°5, p272-273 |
Forsterite |
1,653 |
1,706 |
0,034 |
0,036 |
3,33 |
3,43 |
green to brown |
Eifel, Germany |
|
1,653 |
1,670 |
1,667 |
1,688 |
1,687 |
1,706 |
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 1998 Jun, p91-92 |
Peridot - forsterite |
1,653 |
1,689 |
0,036 |
0,036 |
3,34 |
3,35 |
|
Ross Island, Antarctic |
|
|
|
|
|
|
|
|
|
|
The Australian
Gemmologist 1974 14(4),124 |
Peridot - forsterite |
1,653 |
1,689 |
0,036 |
0,036 |
3,36 |
3,36 |
light yellow green,
yellow green |
Zhangjikou-Xuanhua area,
Hubei Province, China |
formed in an alkali
basalt |
1,653 |
1,653 |
1,670 |
1,670 |
1,689 |
1,689 |
typical peridot |
|
|
Gems & Gemology 1986
spring p38-40 |
Peridot - forsterite |
1,654 |
1,695 |
0,035 |
0,038 |
3,33 |
3,36 |
light yellowish green to
darker yellowish green |
Yiqisong, China |
|
|
|
|
|
|
|
|
|
|
The Journal of Gemmology
2019 Vol 36, N°5, p436-445 |
Peridot - forsterite |
1,654 |
1,694 |
0,036 |
0,038 |
3,33 |
3,38 |
brownish green to darker
brownish green |
North Korea |
|
|
|
|
|
|
|
|
|
|
The Journal of Gemmology
2019 Vol 36, N°5, p436-445 |
Peridot - forsterite |
1,655 |
1,69 |
0,035 |
0,035 |
|
|
brown |
Chihuahua, Mexico |
|
1,655 |
1,655 |
1,673 |
1,673 |
1,690 |
1,690 |
|
|
|
The Journal of Gemmology
1978 N°4, p236 |
Peridot - forsterite |
1,656 |
1,699 |
0,033 |
0,038 |
3,351 |
3,388 |
light yellowish green to
dark brown |
Black Rock Summit, Nye
County, Nevada, USA |
0.55 tot 15.90 ct |
1,656 |
1,660 |
1,674 |
1,678 |
1,694 |
1,699 |
bands in 453, 474, 495
and 635 |
inert |
inert |
The Journal of Gemmology
1998 Vol 26, N°2, p86-102 |
Peridot - forsterite |
1,658 |
1,696 |
0,034 |
0,037 |
3,34 |
3,37 |
green |
Pallasite from Esqual,
Patagonia, Argentina |
84%forsterite, 15.5%
fayalite |
1,658 |
1,660 |
1,671 |
1,673 |
1,693 |
1,696 |
|
|
|
The Journal of Gemmology
1992 Vol23, N°2, p87 |
Forsterite |
1,659 |
1,718 |
0,032 |
0,033 |
3,493 |
3,51 |
green-yellowish,
green-brownish |
Sri Lanka |
|
1,659 |
1,685 |
1,673 |
1,711 |
1,691 |
1,718 |
453nm, 473nm, 493nm |
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002 Mar, p29-39 |
Peridot - forsterite |
1,659 |
1,705 |
0,034 |
0,036 |
3,415 |
3,499 |
light greenish yellow to
yellowish green, medium dark slightly brownish yellowish green, dark yellowish
brown |
Kilbourne Hole, Dona Ana
County, New Mexico, USA |
|
1,659 |
1,669 |
1,674 |
1,684 |
1,693 |
1,705 |
|
|
|
Gems & Gemology 1992
Spring p 16-27 |
dunilite - forsterite |
1,663 |
1,719 |
0,037 |
0,039 |
3,47 |
3,55 |
brown-yellow,
greenish-yellow, greenish-brown |
Kolonne, Embilibitiya,
Sri Lanka |
|
1,663 |
1,680 |
|
|
1,700 |
1,719 |
|
|
|
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2009 58/3-4/Dec, p86 |
dunilite - forsterite |
1,678 |
1,715 |
0,037 |
0,037 |
3,53 |
3,53 |
yellowish brown |
Ratnapura, Sri Lanka |
0.23ct |
1,678 |
1,678 |
1,697 |
1,697 |
1,715 |
1,715 |
|
inert |
inert |
ACAM Lab 2275 |
Peridot - forsterite |
|
|
|
|
|
|
|
|
interplanetary cat's eye
peridot |
|
|
|
|
|
|
|
|
|
Gems & Gemology 2008
summer p177 |
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 |
Peridot - forsterite |
1.634 |
1.71 |
0.036 |
0.036 |
3.27 |
3.48 |
1.634 |
1.674 |
|
|
1.670 |
1.710 |
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
Peridot - forsterite |
1.634 |
1.71 |
0.035 |
0.038 |
3.27 |
3.48 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
Forsterite |
1.634 |
1.678 |
0.031 |
0.04 |
3.21 |
3.3 |
|
|
|
|
|
|
Gemmo.eu
|
Forsterite synthetic |
1.634 |
1.671 |
0.031 |
0.04 |
3.15 |
3.3 |
|
|
|
|
|
|
Gemmo.eu
|
Forsterite |
1.635 |
1.67 |
0.035 |
0.035 |
3.22 |
3.22 |
|
|
|
|
|
|
http://www.gemmology.be |
Forsterite |
1.635 |
1.67 |
0.035 |
0.035 |
3.22 |
3.22 |
1.635 |
1.635 |
1.651 |
1.651 |
1.670 |
1.670 |
http://www.geminterest.com |
Forsterite |
1.635 |
1.69 |
0.033 |
0.039 |
3.2 |
3.45 |
1.635 |
1.655 |
1.651 |
1.657 |
1.670 |
1.690 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
Forsterite |
1.635 |
1.677 |
0.032 |
0.039 |
3.21 |
3.24 |
1.635 |
1.638 |
1.651 |
1.651 |
1.669 |
1.677 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Forsterite synthetic |
1.635 |
1.67 |
0.035 |
0.035 |
3.26 |
3.26 |
1.635 |
1.635 |
1.651 |
1.651 |
1.670 |
1.670 |
Gemmological Tables, Ulrich Henn,
2004 |
Forsterite synthetic |
1.635 |
1.67 |
0.032 |
0.035 |
3.21 |
3.24 |
1.635 |
1.640 |
1.641 |
1.654 |
1.670 |
1.670 |
http://www.geminterest.com |
Forsterite synthetic |
1.635 |
1.671 |
0.034 |
0.035 |
3.23 |
3.26 |
1.635 |
1.637 |
|
|
1.670 |
1.671 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
Forsterite synthetic |
1.635 |
1.67 |
0.035 |
0.035 |
3.21 |
3.23 |
|
|
|
|
|
|
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Peridot - forsterite |
1.64 |
1.703 |
0.034 |
0.038 |
3.2 |
3.5 |
1.640 |
1.654 |
|
|
1.681 |
1.703 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
Peridot - forsterite |
1.64 |
1.69 |
0.033 |
0.038 |
3.22 |
3.35 |
|
|
|
|
|
|
http://www.gemmology.be |
Peridot - forsterite |
1.64 |
1.69 |
0.033 |
0.04 |
3.2 |
3.48 |
1.640 |
1.655 |
1.657 |
1.673 |
1.675 |
1.690 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
Peridot - forsterite |
1.647 |
1.706 |
0.035 |
0.04 |
3.26 |
3.49 |
|
|
|
|
|
|
Gemmo.eu
|
Peridot - forsterite |
1.65 |
1.695 |
0.036 |
0.038 |
3.27 |
3.43 |
1.650 |
1.657 |
1.668 |
1.673 |
1.686 |
1.695 |
Gemmological Tables, Ulrich Henn,
2004 |
Peridot - forsterite |
1.65 |
1.705 |
0.017 |
0.04 |
3.22 |
3.48 |
1.650 |
1.665 |
1.660 |
1.690 |
1.680 |
1.705 |
http://www.geminterest.com |
Peridot - forsterite |
1.654 |
1.689 |
0.038 |
0.038 |
3.34 |
3.34 |
|
|
|
|
|
|
John Sinkakas,
Gemstone and mineral data book,1972 |
Peridot - forsterite |
1.654 |
1.706 |
0.034 |
0.038 |
3.28 |
3.48 |
1.640 |
1.667 |
|
|
1.686 |
1.706 |
Bestimmungstabellen für Edelsteine,
Birgit Günther, 2008 |
Peridot - forsterite |
1.654 |
1.689 |
0.036 |
0.036 |
3.34 |
3.34 |
|
|
|
|
|
|
Gems, R Webster,
5th edition 1994 |
CAUSE OF
COLOUR
Stone |
Colour |
Cause
of colour |
Reference |
Forsterite synthetic |
blue |
Co²+ |
Gemmologie Dez 1999,p234 |
Peridot - forsterite |
green |
Fe²+ in octahedral coordination |
Gems & Gemology Summer 1988 |
MINERAL
INCLUSIONS
Inclusion |
Stone |
Reference |
anhydrite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
antigorite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
apatite |
Forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
augite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
biotite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
bornite |
Peridot - forsterite |
Dr. W.F. Eppler,
Praktische Gemmologie, 1984. |
bradleyite |
Peridot - forsterite |
S. V. Sokolov, S. A. Yarmishko,
and A. V. Fedorov, Gemological Bulletin,No. 3, 2002, pp. 49–54 |
calcite |
Forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
chalcopyrite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
chromite |
Peridot - forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
chrysotile |
Forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
chrysotile |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
diopside |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
dolomite |
Peridot - forsterite |
S. V. Sokolov, S. A.
Yarmishko, and A. V. Fedorov, Gemological Bulletin, No. 3, 2002, pp. 49–54 |
enstatite |
Peridot - forsterite |
Gems & Gemology Fall
2018,p314 |
goethite |
Peridot - forsterite |
Dr. W.F. Eppler,
Praktische Gemmologie, 1984. |
hercynite |
Forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
hercynite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
lizardite |
Peridot - forsterite |
Gems & Gemology Fall
2018,p314 |
ludwigite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
magnesite |
Peridot - olivine group |
Gems & Gemology
winter 2021, p326 |
magnetite |
Forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
millerite |
Peridot - forsterite |
Dr. W.F. Eppler,
Praktische Gemmologie, 1984. |
pentlandite |
Peridot - forsterite |
The Journal of Gemmology,
1998, Vol 26, N°2, p86-102 |
peridot |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
picotite |
Peridot - forsterite |
E.J. Gübelin and J.I. Koivula,
Photoatlas of inclusions in Gemstones, volume 2 (2005) |
pyrrhotite |
Peridot - forsterite |
E.J. Gübelin and J.I.
Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005) |
rutile |
Peridot - olivine group |
Gems & Gemology
winter 2021, p326 |
saponite |
Forsterite |
Gemmologie, Zeitschrift
der Deutschen Gemmologischen Gesellschaft 2002, Mar, p29-40 |
sphalerite |
Peridot - forsterite |
Gems & Gemology Fall
2012, p172 |
talc |
Peridot - olivine group |
Gems & Gemology
winter 2021, p326 |
LOCALITIES
STONE |
LOCALITIES |
REFERENCE |
|||
peridot-Forsterite |
Lightning Peak |
Cherryville |
British Columbia |
Canada |
Gems & Gemology winter 2000 p320 |
peridot-Forsterite |
Xuanhua |
Zhangjiakou Prefecture |
Hebei Province |
China |
Gems & Gemology winter 2000 p320 |
peridot-Forsterite |
Baishishan |
Changbaishan |
Jilin |
China |
Gems & Gemology winter 2000 p320 |
peridot-Forsterite |
|
Zabargad |
Red Sea |
Egypt |
Gems & Gemology 1981 Spring p 2 |
peridot-Forsterite |
Bernardmyo |
Mogok |
Mandalay |
Myanmar |
Gems & Gemology winter 2000 p320 |
Forsterite |
Aheim Olivine Quarry, Almklovdalen |
Vanylven |
More og Romsdal |
Norway |
Neumann, H. (1985): Norges Mineraler.
Norges Geologiske Undersøkelse Skrifter 68, p. 130 |
peridot-Forsterite |
Sapat Gali
(Soppat; Suppat; Sumpat), Manshera |
Naran-Kagan Valley |
Kohistan District |
Pakistan |
Mineralogical Record 3/1997 |
peridot-Forsterite |
Khungtukun
Massif, Malaya Romanikha River, Khatanga, Taimyr Peninsula, Taimyr Autonomous
Region |
Krasnoyarsk Territory |
Eastern Siberia Region |
Russia |
Gems & Gemology 2000 winter p320 |
peridot-Forsterite |
Embilipitiya |
Monaragata |
Southern Province |
Sri Lanka |
Gems & Gemology 2000 winter p320 |
peridot-Forsterite |
Kollonne |
Ratnapura |
Southern Province |
Sri Lanka |
Gems & Gemology 2000 winter p320 |
peridot-Forsterite |
Kingiti |
Mpapwa |
|
Tanzania |
Gems & Gemology winter 2000 p321 |
peridot-Forsterite |
|
Tunduru-Songea area |
Ruvuma Region |
Tanzania |
Gemmologie, 1997, Mar,p31 |
peridot-Forsterite |
San Carlos, San
Carlos Indian Reservation |
Gila County |
Arizona |
USA |
Gems & Gemology 1981 Spring p 8 |
peridot-Forsterite |
Kilbourne Hole |
Dona Ana County |
New Mexico |
USA |
Gems & gemology spring 1992 p16-27 |
peridot-Forsterite |
|
Gai Lai (Pleiku) |
Annam Highlands |
Vietnam |
Gems & Gemology winter 2000 p320 |
peridot-Forsterite |
|
Di Linh |
Lam Dong |
Vietnam |
Gems & Gemology winter 2000 p320 |
CHEMICAL DATA
(%)
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MnO |
MgO |
FeO |
TiO2 |
CaO |
Cr2O3 |
V2O3 |
ZnO |
NiO |
|
Peridot - forsterite |
|
Pallasite from Esqual,
Patagonia |
Argentina |
The Journal of Gemmology
1992, Vol 23, N°2 p87 |
40,69 |
|
0,34 |
43,13 |
14,21 |
|
|
|
|
|
|
Peridot - forsterite |
|
Pallasite from Esqual,
Patagonia |
Argentina |
The Journal of Gemmology
1992, Vol 23, N°2 p87 |
40,75 |
|
0,38 |
43,28 |
14,02 |
|
|
|
|
|
|
Peridot - forsterite |
|
Pallasite from Esqual, Patagonia |
Argentina |
The Journal of Gemmology
1992, Vol 23, N°2 p87 |
41,09 |
|
0,32 |
43,49 |
13,57 |
|
|
|
|
|
|
Peridot - forsterite |
green |
|
China |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1999, Jul p115 |
41,28 |
0,01 |
0,13 |
50,1 |
8,55 |
|
0,06 |
0,01 |
|
|
0,36 |
Peridot - forsterite |
green |
|
China |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1999, Jul p115 |
41,45 |
0,02 |
0,13 |
49,02 |
8,7 |
0,01 |
0,04 |
0,02 |
|
|
0,37 |
Peridot - forsterite |
green |
Yiqisong |
China |
Gems & Gemology 2021 winter,
p331 |
40,94 |
|
0.12 |
50,52 |
8,42 |
|
0,05 |
|
|
|
0.06 |
Peridot - forsterite |
|
Zabargad |
Egypt |
Gems & Gemology 1983
Summer p104-105 |
41,07 |
|
0,11 |
50,44 |
8,14 |
|
0,04 |
|
|
|
0,38 |
Peridot - forsterite |
|
Zabargad |
Egypt |
Gems & Gemology 1983
Summer p104-105 |
41,03 |
|
0,13 |
50,95 |
7,95 |
|
0,03 |
|
|
|
0,41 |
Peridot - forsterite |
|
Zabargad |
Egypt |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,6 |
|
0,1 |
49,7 |
9,6 |
|
|
|
|
|
0,33 |
Peridot - forsterite |
green |
Eifel |
Germany |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1995, Sep, p41 |
39,51 |
0,04 |
0,27 |
44,06 |
15,43 |
|
0,27 |
|
|
|
0,1 |
Peridot - forsterite |
|
Sardinia |
Italy |
Gems & Gemology 2009
Summer p132 |
40,83 |
|
0,15 |
50,15 |
8,98 |
|
|
|
|
|
0,39 |
Peridot - forsterite |
|
Sardinia |
Italy |
Gems & Gemology 2009
Summer p132 |
40,69 |
|
0,11 |
50,17 |
8,77 |
|
|
|
|
|
0,38 |
Peridot - forsterite |
|
|
Mexico |
Gems & Gemology 1983
Summer p104-105 |
40,79 |
|
0,11 |
49,24 |
9,22 |
|
0,07 |
|
|
|
0,4 |
Peridot - forsterite |
|
|
Mexico |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,96 |
|
0,1 |
49,39 |
8,67 |
|
0,16 |
0,06 |
|
|
|
Peridot - forsterite |
|
|
Mexico |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,32 |
|
0,14 |
49,8 |
8,62 |
0,01 |
0,06 |
|
|
|
|
Peridot - forsterite |
|
|
Myanmar |
Gems & Gemology 1983
Summer p104-105 |
40,81 |
|
0,09 |
49,51 |
10,06 |
|
|
|
|
|
0,33 |
Peridot - forsterite |
|
|
Myanmar |
Gems & Gemology 1983
Summer p104-105 |
40,8 |
|
0,1 |
50,28 |
8,25 |
|
0,09 |
|
|
|
0,35 |
Peridot - forsterite |
|
|
Myanmar |
Gems & Gemology 1983
Summer p104-105 |
40,75 |
|
0,07 |
50,71 |
8,58 |
|
|
|
|
|
0,39 |
Peridot - forsterite |
|
|
Myanmar |
Gems & Gemology 1983
Summer p104-105 |
40,25 |
|
0,15 |
48,9 |
10,16 |
|
|
|
|
|
0,31 |
Peridot - forsterite |
olive green |
Mogok |
Myanmar |
Gems & Gemology 2021
winter, p330 |
42,77 |
|
0.04 |
49,23 |
7,61 |
|
0,02 |
|
|
|
0.34 |
Peridot - forsterite |
green |
Pyaung-Gaung |
Myanmar |
Gems & Gemology 2021
winter, p331 |
42,62 |
|
0.1 |
50,04 |
7,64 |
|
0,03 |
|
|
|
0.15 |
Peridot - forsterite |
|
|
Norway |
Gems & Gemology 1983
Summer p104-105 |
41,19 |
|
0,06 |
51,63 |
6,94 |
|
|
|
|
|
0,29 |
Peridot - forsterite |
|
|
Norway |
Gems & Gemology 1983
Summer p104-105 |
41,18 |
|
0,08 |
51,76 |
6,95 |
|
|
|
|
|
0,43 |
Peridot - forsterite |
green |
Nanga Parbat region |
Pakistan |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1995, Sep, p41 |
40,96 |
|
0,16 |
49,58 |
8,73 |
|
|
0,02 |
|
|
0,32 |
Peridot - forsterite |
green |
Nanga Parbat region |
Pakistan |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1995, Sep, p41 |
41,09 |
|
0,15 |
50,44 |
7,29 |
|
|
|
|
|
0,26 |
Peridot - forsterite |
green |
Nanga Parbat region |
Pakistan |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1995, Sep, p41 |
41,9 |
|
0,18 |
51,69 |
6,15 |
|
|
|
|
|
0,26 |
Peridot - forsterite |
green |
Nanga Parbat region |
Pakistan |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1995, Sep, p41 |
42,48 |
|
0,18 |
52,57 |
4,95 |
|
|
|
|
|
0,26 |
Peridot - forsterite |
green |
Sapat |
Pakistan |
Gems & Gemology 2021
winter, p331 |
42,58 |
|
0.12 |
48,24 |
8,32 |
|
|
|
|
|
0.12 |
Peridot - forsterite |
green |
|
Sri Lanka |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 1995, Sep, p41 |
42,09 |
|
0,09 |
53,62 |
4,02 |
|
0,04 |
|
0,11 |
|
|
Forsterite |
green-brownish |
|
Sri Lanka |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 2002, Mar, p33 |
38,45 |
|
29 |
40,14 |
21,15 |
|
0,13 |
|
|
|
|
Forsterite |
green-yellowish |
|
Sri Lanka |
Gemmologie, Zeitschrift
der deutschen gemmologischen Gesellschaft, 2002, Mar, p33 |
39,45 |
|
0,19 |
45,69 |
14,41 |
|
0,1 |
|
|
|
|
Peridot - forsterite |
|
|
Sri Lanka |
The Journal of Gemmology
, Vol 19, No 8 p694 |
40,62 |
|
0,27 |
48,11 |
10,81 |
|
0,14 |
|
|
|
|
Peridot - forsterite |
green |
|
Tanzania |
Gems & Gemology 1983
Summer p104-105 |
40,62 |
|
0,12 |
51,26 |
7,74 |
|
|
|
|
|
0,39 |
Peridot - forsterite |
|
Arizona |
USA |
Gems & Gemology 1983
Summer p104-105 |
40,56 |
|
0,17 |
48,25 |
11,18 |
|
0,07 |
|
|
|
0,36 |
Peridot - forsterite |
|
Arizona |
USA |
Gems & Gemology 1983
Summer p104-105 |
40,77 |
|
0,17 |
48,22 |
9,68 |
|
0,06 |
|
|
|
0,39 |
Peridot - forsterite |
|
Arizona |
USA |
Gems & Gemology 1983
Summer p104-105 |
40,55 |
|
0,12 |
48,89 |
9,73 |
|
0,11 |
|
|
|
0,37 |
Peridot - forsterite |
|
Arizona |
USA |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,39 |
|
0,11 |
48,5 |
9,71 |
0,02 |
0,1 |
0,04 |
|
|
|
Peridot - forsterite |
|
Arizona |
USA |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,57 |
|
0,12 |
48,47 |
10,37 |
0,01 |
0,009 |
0,03 |
|
|
|
Peridot - forsterite |
|
Arizona |
USA |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,62 |
|
0,18 |
48,34 |
8,67 |
0,01 |
0,1 |
0,04 |
|
|
|
Peridot - forsterite |
|
Arizona |
USA |
The Journal of Gemmology
, Vol 19, No 8 p694 |
41,11 |
|
0,09 |
49,49 |
9,07 |
0,02 |
0,09 |
0,04 |
|
|
|
Peridot - forsterite |
|
Black Rock Summit, Nye
County, Nevada |
USA |
The Journal of Gemmology
1998, Vol26, N°2, p86-102 |
40,55 |
1,62 |
0,16 |
47,43 |
10,27 |
|
|
|
|
|
|
Peridot - forsterite |
|
Black Rock Summit, Nye
County, Nevada |
USA |
The Journal of Gemmology
1998, Vol26, N°2, p86-102 |
40,05 |
0,08 |
0,16 |
47,34 |
11,79 |
|
0,22 |
|
|
|
0,28 |
Peridot - forsterite |
|
Black Rock Summit, Nye
County, Nevada |
USA |
The Journal of Gemmology
1998, Vol26, N°2, p86-102 |
37,9 |
|
0,2 |
47,62 |
13,81 |
|
0,15 |
0,034 |
|
0,008 |
0,27 |
Peridot - forsterite |
|
|
Vietnam |
Gems & Gemology 2016
Fall, p 283 |
41,02 |
|
0,12 |
50,36 |
8,68 |
|
0,06 |
|
|
|
0,36 |
Peridot - forsterite |
|
Dak Lak |
Vietnam |
Gems & Gemology Fall
2012, p173 |
41,78 |
|
0,15 |
49,95 |
8,49 |
|
0,04 |
0,04 |
|
|
0,36 |
Peridot - forsterite |
|
Gia Lai |
Vietnam |
Gems & Gemology Fall
2012, p173 |
41,95 |
0,01 |
0,11 |
50,07 |
8,47 |
|
0,05 |
0,03 |
|
|
0,37 |
Peridot - forsterite |
|
Lam Dong |
Vietnam |
Gems & Gemology Fall
2012, p173 |
41,74 |
|
0,12 |
49,99 |
8,48 |
|
0,05 |
0,04 |
|
|
0,37 |