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INVESTIGATIONS

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

Kaliborite

1.503

1.549

0.046

0.046

2.11

2.11

near colourless

Kazakhstan

0.43ct

1.503

1.503

1.524

1.530

1.549

1.549

 

inert

inert

Gems & Gemology 1995 Summer, p130

 

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

Kaliborite

1.503

1.55

0.041

0.043

2.11

2.13

1.503

1.508

1.526

1.527

1.549

1.550

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

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA