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INVESTIGATIONS

Stone

RI min

RI max

Dens min

Dens max

Colour

Location

Info

Spectrum

UVS

UVL

Reference

Genthelvite

1.741

1.745

3.63

3.66

 

Mont Saint-Hilaire, Quebec, Canada

phosphoresces yellow-green

 

bright green

bright green

The Journal of Gemmology 1996 Vol 25, N°1,p35

Genthelvite

1.742

1.742

3.68

3.7

purplish red-brown

 

0.33 ct

 

inert

inert

Gems & Gemology 1995 Fall, p207

Genthelvite

1.742

1.742

3.67

3.67

orange-red

 

8.16ct

 

inert

inert

Gems & Gemology 2002 Spring, p82

 

TABLES

Stone

RI min

RI max

Dens min

Dens max

Reference

Genthelvite

1.738

1.752

3.62

3.7

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

Genthelvite

1.738

1.752

3.44

3.71

Gemmo.eu 2013

Genthelvite

1.74

1.746

3.44

3.7

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Genthelvite

1.742

1.742

3.67

3.67

http://www.geminterest.com 

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

genthelvite

pink

iron content, but weak Mn2+ features can also be seen in the spectrum

http://minerals.caltech.edu

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA