Gemsdat
 

                Home            Gemstones

 

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

Coeruleite

1.6

 

 

 

2.12

2.12

blue

 

8.27 ct, spot RI, cabochon, treated (resin)

 

 

 

 

 

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2013 62/1-2, Jun, p32

Coeruleite

1.6

 

 

 

2.7

2.7

blue

Bolivia

aggregate

 

 

 

 

 

 

 

 

 

The Journal of Gemmology 1978 N°2, p

 

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

Coeruleite

1.59

1.63

 

 

2.69

2.81

 

 

 

 

 

 

Gemmo.eu 2013

Coeruleite

1.6

1.6

 

 

2.7

2.8

 

 

 

 

 

 

http://www.geminterest.com 

Coeruleite

1.6

1.6

 

 

2.68

2.72

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Coeruleite

1.6

1.6

 

 

2.7

2.8

 

 

 

 

 

 

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

Coeruleite

1.6

1.6

 

 

2.7

2.7

 

 

 

 

 

 

Gemmological Tables, Ulrich Henn, 2004 

Coeruleite

1.6

 

 

 

2.7

2.8

 

 

 

 

 

 

http://www.gemmology.be 

Coeruleite

1.6

1.6

 

 

2.7

2.8

 

 

 

 

 

 

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Coeruleite

1.6

1.6

 

 

2.58

2.58

 

 

 

 

 

 

Gems, R Webster, 5th edition 1994 

Coeruleite

1.6

1.6

 

 

2.7

2.8

 

 

 

 

 

 

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

Coeruleite

1.6

1.6

 

 

2.58

2.8

 

 

 

 

 

 

Gemology Tools Professional 2010

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)

Stone

Colour

Locality

Reference

Al2O3

CuO

H2O

As2O3

Coeruleite

blue

 

 

The Journal of Gemmology, 1978, N°2, p88

26.9

11.8

23.3

38