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INVESTIGATIONS

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

Colour

Location

Info

ne min

ne max

no min

no max

Spectrum

UVS

UVL

Reference

Sogdianite

1.606

1.608

0.002

0.002

2.765

2.765

lively violet

translucent

411, 419, 437 lines, weak bands: 488-493 and 630-645

very weak dark red

weak violet

The Journal of Gemmology 1979 Vol 16, N°8, p514-516

 

TABLES

Stone	RI min	RI max	Biref min	Biref max	Dens min	Dens max	ne min	ne max	no min	no max	Reference
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9	1.606	1.606	1.608	1.608	Gemme, Dati per l'identificazione, P. De Stefano et al, 1993
Sogdianite	1.606	1.608	0.002	0.002	2.77	2.9	1.606	1.606	1.608	1.608	Gemmological Tables, Ulrich Henn, 2004
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9					http://www.gemmology.be
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9	1.608	1.608	1.606	1.606	Joel Arem, Color Encyclopedia of Gemstones, 1987
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9	1.608	1.608	1.606	1.606	http://www.geminterest.com
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9					Gems, R Webster, 5th edition 1994
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9					Bestimmungstabellen für Edelsteine, Birgit Günther, 2008
Sogdianite	1.606	1.608	0.002	0.002	2.76	2.9					Tables of Gemstone Identification, Roger Dedeyn, Ivo Quintens, 2007

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)