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

Hodgkinsonite

1.72

1.743

0.023

0.023

3.98

3.98

Franklin Furnace, New Jersey, USA

1.720

1.720

1.739

1.739

1.743

1.743

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1990 Dec, p273-274

Hodgkinsonite

1.72

1.746

0.026

0.026

3.95

3.95

pink

0.13ct

The Journal of Gemmology 1983 Vol18, N°7, p596

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

Hodgkinsonite

1.719

1.748

0.022

0.026

3.91

4.08

1.719

1.724

1.742

1.748

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Hodgkinsonite

1.719

1.747

0.022

0.027

3.9

4.1

Gemmo.eu 2017

Hodgkinsonite

1.72

1.746

0.026

0.026

3.91

3.99

1.720

1.720

1.741

1.741

1.746

1.746

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Hodgkinsonite

1.72

1.746

0.026

0.026

3.91

3.99

1.720

1.720

1.741

1.741

1.746

1.746

http://www.geminterest.com 

Hodgkinsonite

1.72

1.746

0.023

0.026

3.91

4.08

1.720

1.724

1.739

1.742

1.743

1.746

Gemmological Tables, Ulrich Henn, 2004 

Hodgkinsonite

1.72

1.746

0.026

0.026

3.91

3.99

http://www.gemmology.be 

Hodgkinsonite

1.72

1.746

0.026

0.026

3.95

3.95

Gems, R Webster, 5th edition 1994 

Hodgkinsonite

1.72

1.746

0.026

0.026

3.91

3.99

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

Hodgkinsonite

1.72

1.746

0.026

0.026

3.91

3.99

Gemology Tools Professional 2010

Hodgkinsonite

1.724

1.746

0.022

0.022

3.9

3.9

John Sinkakas, Gemstone and mineral data book,1972