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INVESTIGATIONS

Stone

RI min

RI max

Dens min

Dens max

Colour

Location

Info

Spectrum

UVS

UVL

Reference

GGG, artificial product

1.917

1.917

7.12

7.12

colourless

 

 

 

 

 

ACAM lab  1551

GGG, artificial product

1.97

1.97

 

 

 

 

dispersion 0.045

 

 

 

The Journal of Gemmology 1980 Vol17, N°3, p148

GGG, artificial product

2.01

2.01

7.15

7.15

colourless

 

0.94ct, RI reading gemmeter

 

 

 

ACAM Lab  4059

GGG, artificial product

2.02

2.02

7.1

7.1

pinkish red

 

33.7 ct

 

strong pinkish red

strong pinkish red

ACAM lab  3839

GGG, artificial product

 

 

7.11

7.14

intense pink, pink, light pink, almandine red, green-blue, aquamarine blue, sky blue, intense blue, raspberry, lilac

made in Russia

chelsea : red and blue stones : red

sharp lines and strong bands depending on colour

 

 

Gems & Gemology 1997 Fall, p228

 

TABLES

Stone

RI min

RI max

Dens min

Dens max

Reference

GGG, artificial product

1.92

2.03

7.02

7.09

Joel Arem, Color Encyclopedia of Gemstones, 1987 

GGG, artificial product

1.92

2.03

7.02

7.09

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

GGG, artificial product

1.92

2.03

7.02

7.1

http://www.geminterest.com 

GGG, artificial product

1.92

2.03

7.05

7.05

Gems, R Webster, 5th edition 1994 

GGG, artificial product

1.92

2.03

7.02

7.09

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

GGG, artificial product

1.95

2.03

6.8

7.2

Gemmo.eu 

GGG, artificial product

1.97

2.03

7.05

7.05

Gemmological Tables, Ulrich Henn, 2004 

GGG, artificial product

1.97

2.03

6.95

7.09

Gemology Tools Professional 2010

GGG, artificial product

2

2

7.05

7.05

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

GGG, artificial product

2.03

2.03

7.05

7.05

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

GGG, artificial product

2.03

2.035

6.8

7.7

http://www.gemmology.be 

 

CAUSE OF COLOUR

 

CHEMICAL DATA