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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

Stichtite

1.52

1.55

 

 

2.13

2.13

 

 

cabochon

 

 

 

 

Cr-spectrum

inert

inert

Gems & Gemology 2003 fall p 220

Stichtite

1.53

1.53

 

 

2.15

2.22

lilac

South Africa

cabochon, RI by distant vision method

 

 

 

 

Cr lines

 

 

Gems & Gemology 1955 Spring, p149-150,156

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Stichtite

1.516

1.544

0.026

0.026

2.16

2.2

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Stichtite

1.516

1.55

0.026

0.027

2.16

2.26

1.516

1.520

1.540

1.550

Gemme, Dati per l'identificazione, P. De Stefano et al, 1993 

Stichtite

1.516

1.544

0.024

0.028

2.11

2.2

1.516

1.516

1.540

1.544

Gemmological Tables, Ulrich Henn, 2004 

Stichtite

1.518

1.545

0.027

0.027

2.16

2.22

 

 

 

 

http://www.gemmology.be 

Stichtite

1.518

1.545

0.027

0.027

2.16

2.22

1.518

1.518

1.545

1.545

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Stichtite

1.518

1.545

0.027

0.027

2.16

2.22

1.518

1.518

1.545

1.545

http://www.geminterest.com 

Stichtite

1.518

1.545

0.027

0.027

2.16

2.22

 

 

 

 

Tables of Gemstone Identification, Roger Dedeyn, Ivo Quintens, 2007 

Stichtite

1.52

1.55

0.027

0.027

2.15

2.22

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Stichtite

1.52

1.55

0.027

0.027

2.15

2.22

 

 

 

 

Gems, R Webster, 5th edition 1994 

Stichtite

1.54

1.54

 

 

2.15

2.2

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)