|
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 |
|
serpentine |
1,55 |
1,55 |
|
|
2,5 |
2,67 |
green to yellowish green
to yellow colour, sometimes with white or grey veins and black spots |
Val Malenco, Italy |
spot RI, 7.35ct to
13.78ct, opaque, hardness 4 |
|
|
|
|
|
|
|
inert |
inert |
Gems & Gemology 2016
Spring, p38-49 |
|
Lizardite -serpentine
group |
1,55 |
1,56 |
|
|
2,52 |
2,82 |
greenish yellow to dark
green |
North-Eastern China |
forsterite-serpentine,
translucent |
|
|
|
|
|
|
|
inert |
inert |
The Journal of Gemmology
2023 38 (6), p603 |
|
Antigorite - serpentine group |
1,56 |
1,562 |
0,002 |
0,002 |
2,59 |
2,59 |
greenish yellow |
New Zealand |
hardness 5-6, fracture
splintery |
|
|
|
|
|
|
|
inert |
inert |
The Australian
Gemmologist 1986 Vol 16, Nr 1, p25-27 |
|
Antigorite - serpentine group |
1,56 |
1,56 |
|
|
2,57 |
2,58 |
deep green |
Booyo, South Korea |
translucent, hardness 5 |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology
1998 Vol 26, N°3, p156-164 |
|
Antigorite - serpentine group |
1,563 |
1,567 |
0,004 |
0,004 |
2,55 |
2,55 |
yellowish green |
Afghanistan |
beads, translucent |
|
|
|
|
|
|
|
|
|
Gems & Gemology 1998
winter, p 297 |
|
Antigorite - serpentine group |
|
|
|
|
|
|
light yellow |
|
artifact 4cm, resembling
Libyan desert glass |
|
|
|
|
|
|
no features |
inert |
slightly yellow |
Gems & Gemology 2008
summer, p181 |
|
Lizardite -serpentine
group |
|
|
|
|
|
|
orange |
Wessels Mine, South
Africa |
0.80-1.88ct, translucent |
|
|
|
|
|
|
|
|
|
The Journal of Gemmology
2014 34(2), p98-99 |
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 |
|
serpentine |
1.49 |
1.57 |
0.009 |
0.009 |
2.51 |
2.63 |
|
|
|
|
|
|
Bestimmungstabellen für Edelsteine,
Birgit Günther, 1981 |
|
Williamsite - serpentine group |
1.5 |
1.564 |
|
|
2.44 |
2.8 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
serpentine |
1.529 |
1.574 |
0.004 |
0.009 |
2.5 |
2.6 |
1.529 |
1.567 |
1.530 |
1.573 |
1.537 |
1.574 |
Gemmological Tables, Ulrich Henn,
2004 |
|
serpentine |
1.532 |
1.571 |
0.001 |
0.014 |
2.4 |
2.8 |
1.532 |
1.569 |
|
|
1.545 |
1.571 |
Gemme, Dati per l'identificazione, P. De
Stefano et al, 1993 |
|
serpentine |
1.532 |
1.571 |
0.001 |
0.014 |
2.53 |
2.61 |
|
|
|
|
|
|
http://www.gemmology.be |
|
Chrysotile - serpentine group |
1.532 |
1.556 |
0.013 |
0.013 |
2.55 |
2.55 |
1.532 |
1.549 |
|
|
1.545 |
1.556 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Chrysotile - serpentine group |
1.532 |
1.556 |
0.013 |
0.013 |
2.4 |
2.62 |
1.532 |
1.549 |
|
|
1.545 |
1.556 |
http://www.geminterest.com |
|
Chrysotile - serpentine group |
1.532 |
1.556 |
0.013 |
0.024 |
2.53 |
2.65 |
1.532 |
1.544 |
1.533 |
1.543 |
1.545 |
1.556 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Chrysotile - serpentine group |
1.532 |
1.556 |
0.013 |
0.013 |
2.55 |
2.55 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Williamsite - serpentine group |
1.532 |
1556 |
0.013 |
0.024 |
2.53 |
2.65 |
|
|
|
|
|
|
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Lizardite -serpentine group |
1.538 |
1.56 |
0.008 |
0.008 |
2.51 |
2.55 |
1.538 |
1.554 |
|
|
1.546 |
1.560 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Lizardite -serpentine group |
1.538 |
1.56 |
0.008 |
0.008 |
2.4 |
2.62 |
1.538 |
1.554 |
|
|
1.546 |
1.560 |
http://www.geminterest.com |
|
Lizardite -serpentine group |
1.538 |
1.568 |
0.005 |
0.022 |
2.55 |
2.6 |
1.538 |
1.554 |
|
|
1.546 |
1.568 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Lizardite -serpentine group |
1.538 |
1.56 |
0.008 |
0.008 |
2.55 |
2.55 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
serpentine |
1.544 |
1.572 |
0.001 |
0.015 |
2.5 |
2.75 |
|
|
|
|
|
|
Gemmo.eu 2016 |
|
Antigorite -bowenite- serpentine group |
1.555 |
1.573 |
0.004 |
0.016 |
2.5 |
2.67 |
1.555 |
1.567 |
1.560 |
1.570 |
1.560 |
1.573 |
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Antigorite -bowenite- serpentine group |
1.555 |
1.575 |
0.012 |
0.016 |
2.58 |
2.63 |
|
|
|
|
|
|
Gemmo.eu 2013 |
|
Antigorite -bowenite- serpentine group |
1.56 |
1.56 |
|
|
2.58 |
2.58 |
|
|
|
|
|
|
John Sinkakas,
Gemstone and mineral data book,1972 |
|
serpentine |
1.56 |
1.56 |
|
|
2.58 |
2.8 |
|
|
|
|
|
|
Tabellen zur Edelstein-Bestimmung,
Pschichholz FGA, 1975 |
|
Antigorite -bowenite- serpentine group |
1.56 |
1.571 |
0.001 |
0.014 |
2.58 |
2.67 |
1.560 |
1.560 |
1.566 |
1.566 |
1.571 |
1.571 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Antigorite -bowenite- serpentine group |
1.56 |
1.571 |
0.014 |
0.014 |
2.58 |
2.62 |
1.560 |
1.560 |
1.566 |
1.566 |
1.571 |
1.571 |
http://www.geminterest.com |
|
Antigorite -bowenite- serpentine group |
1.56 |
1.56 |
|
|
2.5 |
2.7 |
|
|
|
|
|
|
Gems, R Webster,
5th edition 1994 |
|
Antigorite -bowenite- serpentine group |
1.56 |
1.571 |
0.005 |
0.006 |
2.61 |
2.61 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Antigorite -bowenite- serpentine group |
1.56 |
1.571 |
0.014 |
0.014 |
2.61 |
2.61 |
|
|
|
|
|
|
Michael
O'Donoghue, Gems: Their Sources, Descriptions and Identification (2006), 873pp
|
|
Clinochrysotile - serpentine group |
1.569 |
1.57 |
0.001 |
0.001 |
2.53 |
2.53 |
1.569 |
1.569 |
|
|
1.570 |
1.570 |
Joel Arem, Color
Encyclopedia of Gemstones, 1987 |
|
Clinochrysotile - serpentine group |
1.569 |
1.57 |
0 |
0.001 |
2.4 |
2.62 |
1.569 |
1.569 |
|
|
1.570 |
1.570 |
http://www.geminterest.com |
|
Clinochrysotile - serpentine group |
1.569 |
1.57 |
0.001 |
0.001 |
2.53 |
2.53 |
|
|
|
|
|
|
Tables of
Gemstone Identification, Roger Dedeyne, Ivo Quintens, 2007 |
|
Clinochrysotile - serpentine group |
1.569 |
1.57 |
0.001 |
0.001 |
2.53 |
2.53 |
|
|
|
|
|
|
Gemology Tools Professional 2010 |
|
Williamsite - serpentine group |
1.57 |
1.57 |
|
|
2.61 |
2.61 |
|
|
|
|
|
|
John Sinkakas,
Gemstone and mineral data book,1972 |
|
Williamsite - serpentine group |
1.57 |
1.57 |
|
|
2.61 |
2.61 |
|
|
|
|
|
|
Gems, R Webster,
5th edition 1994 |
CAUSE OF
COLOUR
|
Stone |
Colour |
Cause
of colour |
Reference |
|
Lizardite -serpentine group |
orange |
micro-inclusions of hematite |
The Journal of
Gemmology 2014, Vol 34, No.2, p98 |
MINERAL
INCLUSIONS
|
Inclusion |
Stone |
Reference |
|
hematite |
Lizardite -serpentine group |
The Journal of
Gemmology 2014, 34(2), p98-99 |
|
magnetite |
Antigorite - serpentine group |
The Journal of
Gemmology 1998, Vol 26, N°3 p156-1.64 |
LOCALITIES
CHEMICAL DATA
(%)
|
Stone |
Colour |
Locality |
Reference |
SiO2 |
Al2O3 |
MnO |
MgO |
TiO2 |
CaO |
Na2O |
Cr2O3 |
Fe2O3 |
K2O |
H2O |
NiO |
P2O5 |
|
|
Antigorite - serpentine group |
|
|
Venezuela |
The Journal of Gemmology
1998, Vol 26, N°3, p160 |
43.6 |
1.03 |
0.04 |
41 |
0.01 |
0.05 |
0.01 |
0.02 |
1.71 |
0.03 |
12.26 |
0.16 |
|
|
Antigorite - serpentine group |
deep green |
Booyo |
South Korea |
The Journal of
Gemmology 1998, Vol 26, N°3, p160 |
42.49 |
1.3 |
0.12 |
39.08 |
0.01 |
0.68 |
|
|
3.85 |
0.06 |
|
|
0.06 |
|
Lizardite -serpentine group |
|
Ulsan |
South Korea |
The Journal of
Gemmology 1998, Vol 26, N°3, p160 |
38.04 |
0.86 |
0.11 |
37.47 |
0.01 |
0.24 |
0.01 |
|
7.62 |
0.01 |
|
|
0.01 |
|
Lizardite -serpentine group |
|
Ulsan |
South Korea |
The Journal of
Gemmology 1998, Vol 26, N°3, p160 |
39.45 |
1.07 |
0.1 |
38.48 |
0.02 |
0.63 |
0.25 |
|
7.72 |
0.02 |
|
|
0.11 |