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

Ulexite

1.51

1.52

0.01

0.01

1.97

1.97

white

Boron, California, USA

22.14ct, translucent

no features

weak green

week green

GIA Gem Database  35465

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

Ulexite

1.489

1.521

0.021

0.03

1.9

1.98

Gemmo.eu 2019

Ulexite

1.491

1.52

0.023

0.039

1.65

2

1.491

1.496

1.519

1.520

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

Ulexite

1.491

1.52

0.029

0.029

1.96

1.96

1.491

1.491

1.504

1.504

1.520

1.520

Gemmological Tables, Ulrich Henn, 2004 

Ulexite

1.491

1.52

0.026

0.029

2

2

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Ulexite

1.491

1.52

0.023

0.029

1.65

2

1.491

1.496

1.504

1.505

1.519

1.520

http://www.geminterest.com 

Ulexite

1.491

1.52

0.023

0.023

1.95

1.95

1.49

1.50

1.50

1.51

1.52

1.52

Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification (2006),  873pp 

Ulexite

1.496

1.519

0.023

0.023

1.65

1.95

1.496

1.496

1.505

1.050

1.519

1.519

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Ulexite

1.496

1.519

0.023

0.023

1.96

1.96

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Ulexite

1.496

1.519

0.023

0.023

1.65

1.95

http://www.gemmology.be 

Ulexite

1.496

1.519

0.023

0.023

1.65

1.95

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

Ulexite

1.51

1.98

1.98

John Sinkakas, Gemstone and mineral data book,1972 

Ulexite

1.51

1.51

0.02

0.02

1.65

2

Gems, R Webster, 5th edition 1994 

Ulexite

1.519

1.65

0.023

0.023

1.65

1.95

Gemology Tools Professional 2010