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INVESTIGATIONS

 

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

Gaylussite

1.44

1.523

0.08

0.08

1.98

1.99

1.440

1.443

1.514

1.517

1.520

1.523

Gemmological Tables, Ulrich Henn, 2004 

Gaylussite

1.44

1.523

0.08

0.08

1.98

1.98

1.440

1.443

1.514

1.517

1.520

1.523

Gems, R Webster, 5th edition 1994 

Gaylussite

1.443

1.523

0.08

0.08

1.99

1.99

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Gaylussite

1.443

1.523

0.077

0.08

1.99

1.99

1.443

1.445

 

 

1.522

1.523

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

Gaylussite

1.444

1.523

0.077

0.079

1.99

2

 

 

 

 

 

 

http://www.gemmology.be 

Gaylussite

1.444

1.523

0.077

0.079

1.99

2.01

 

 

 

 

 

 

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

Gaylussite

1.445

1.522

0.077

0.077

1.995

1.995

1.445

1.445

1.516

1.516

1.522

1.522

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Gaylussite

1.445

1.522

0.077

0.077

1.99

2

1.445

1.445

1.516

1.516

1.522

1.522

http://www.geminterest.com 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA