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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

Fe³+

Gems & Gemology Summer 1988

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA