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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

Bahianite

 

 

 

 

5.18

5.18

brown

 

0.73ct, translucent, RI OTL

 

 

 

 

 

 

 

very weak blue

inert

Gems & Gemology 2016 Spring, p 68

 

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

Bahianite

1.805

1.925

0.105

0.115

4.78

5.5

 

 

 

 

 

 

Gemmo.eu 2013

Bahianite

1.81

1.92

0.11

0.11

4.89

5.16

 

 

 

 

 

 

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

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Bahianite

Garimpo do Morro do Chapeu (Rio do Pico das Almas)

Erico Cardoso (Old Agua Quente)

Bahia

Brazil

J. and J. Cassedanne : Bull. Mineral., 1980, 103, pp 600-602







 

CHEMICAL DATA