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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

Cavansite

1.54

1.54

 

 

2.24

2.27

 

Wagholie quarries, Poona, India

cabochons up to 5ct, impregnated with organic substance

 

 

 

 

 

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Sep, p4

 

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

Cavansite

1.539

1.548

0.009

0.009

2.24

2.27

1.539

1.539

1.546

1.546

1.548

1.548

Gemmological Tables, Ulrich Henn, 2004 

Cavansite

1.539

1.548

0.009

0.009

2.24

2.31

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Cavansite

1.539

1.551

0.009

0.009

2.21

2.31

1.539

1.542

1.544

1.544

1.546

1.551

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

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

Cavansite

blue

charge transfer O²-->V4+

Alain Abréal, juillet 2002

 

MINERAL INCLUSIONS

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Cavansite

Wagholi Quarry, Wagholi, Ahmadnagar (Ahmed Nagar; Ahmednagar)

Pune (Poonah)

Maharashtra

India

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995, Sep, p4

 

CHEMICAL DATA