|
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 |
|
Hematite |
|
|
|
|
5.09 |
5.09 |
|
|
5.05ct, cabochon, not
magnetic |
|
|
|
|
|
|
|
ACAM lab
1095 |
TABLES
|
Stone |
RI min |
RI max |
Biref min |
Biref max |
Dens min |
Dens max |
ne min |
ne max |
no min |
no max |
Reference |
|
Hematite |
2.69 |
3.22 |
0.21 |
0.28 |
4.9 |
5.3 |
2.690 |
2.940 |
2.900 |
3.220 |
Gemmological Tables, Ulrich Henn, 2004
|
|
Hematite |
2.87 |
3.22 |
0.28 |
0.28 |
4.95 |
5.26 |
3.15 |
3.22 |
2.87 |
2.94 |
Tables of Gemstone
Identification, Roger Dedeyne, Ivo Quintens 2007
|
|
Hematite |
2.9 |
3.22 |
0.275 |
0.28 |
5.24 |
5.28 |
|
|
|
|
Gemmo.eu
|
|
Hematite |
2.94 |
3.22 |
0.28 |
0.28 |
4.95 |
5.26 |
3.220 |
3.220 |
2.940 |
2.940 |
Joel Arem, Color Encyclopedia
of Gemstones, 1987
|
|
Hematite |
2.94 |
3.22 |
0.288 |
0.288 |
5.12 |
5.28 |
|
|
|
|
Bestimmungstabellen für Edelsteine, Birgit
Günther, 1981
|
|
Hematite |
2.94 |
3.22 |
0.28 |
0.28 |
4.95 |
5.26 |
2.940 |
2.940 |
3.220 |
3.220 |
http://www.geminterest.com
|
|
Hematite |
2.94 |
3.22 |
0.28 |
0.28 |
4.9 |
5.28 |
2.940 |
2.940 |
3.220 |
3.220 |
Gemme, Dati per l'identificazione, P. De Stefano
et al, 1993
|
|
Hematite |
2.94 |
3.22 |
0.28 |
0.28 |
4.95 |
5.26 |
|
|
|
|
http://www.gemmology.be
|
|
Hematite |
2.94 |
3.22 |
0.28 |
0.28 |
4.95 |
5.16 |
|
|
|
|
Tabellen zur Edelstein-Bestimmung, Pschichholz
FGA, 1975
|
|
Hematite |
2.94 |
3.22 |
|
|
4.95 |
5.16 |
|
|
|
|
Gems, R Webster, 5th edition
1994
|
|
Hematite |
2.94 |
3.22 |
0.28 |
0.28 |
4.95 |
5.28 |
|
|
|
|
Gemology Tools Professional 2010
|
|
Hematite |
|
|
|
|
4.95 |
5.26 |
|
|
|
|
John Sinkakas, Gemstone and
mineral data book,1972
|
CAUSE OF COLOUR
|
Stone |
Colour |
Cause of
colour |
Reference |
|
Hematite |
grey in reflection, red in
transmission |
Feł+ |
Gems & Gemology Summer
1988 |
MINERAL INCLUSIONS
LOCALITIES
CHEMICAL DATA