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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

wollastonite

1.62

1.62

 

 

2.94

2.94

(dyed) green

 

cabochon, RI by spot method

 

 

 

 

 

 

band in the red (dye)

bluish

bluish

Gems & Gemology 1977 Summer, p296

 

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

Wollastonite

1.616

1.653

0.015

0.015

2.8

3.09

1.616

1.640

1.628

1.650

1.631

1.653

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Wollastonite

1.616

1.653

0.013

0.017

2.8

3.09

1.616

1.640

 

 

1.631

1.653

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

Wollastonite

1.616

1.653

0.015

0.015

2.8

3.09

 

 

 

 

 

 

http://www.gemmology.be 

Wollastonite

1.616

1.653

0.015

0.015

2.8

3.09

 

 

1.616

1.640

1.628

1.650

http://www.geminterest.com 

Wollastonite

1.616

1.631

0.015

0.015

2.8

2.9

 

 

 

 

 

 

Gems, R Webster, 5th edition 1994 

Wollastonite

1.616

1.653

0.015

0.015

2.8

3.09

1.616

1.640

1.628

1.650

1.631

1.653

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

Wollastonite

1.616

1.653

0.015

0.015

2.8

3.09

 

 

 

 

 

 

Gemology Tools Professional 2010

Wollastonite

1.618

1.632

0.014

0.014

2.89

2.94

1.618

1.618

1.630

1.630

1.632

1.632

Gemmological Tables, Ulrich Henn, 2004 

Wollastonite

1.62

1.63

 

 

2.8

2.9

 

 

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)