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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

Phosgenite

 

 

 

 

6.09

6.12

yellow-brownish

Morocco

up to 78ct

 

 

 

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1997 Jun, p65

Phosgenite

 

 

 

 

6.13

6.13

colourless

 

10.28 ct, RI is OTL

 

 

 

 

 

strong yellow

 

Gems & Gemology 1977 Summer, p295

Phosgenite

 

 

 

 

6.18

6.18

yellowish orange

Touissit, Morocco

25.56ct

 

 

 

 

broad absorption below 430nm and above 670nm

inert

inert

GIA Gem Database  35466

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Phosgenite

2.114

2.14

0.026

0.026

6.13

6.13

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Phosgenite

2.114

2.145

0.028

0.028

6.13

6.13

 

 

 

 

http://www.gemmology.be 

Phosgenite

2.114

2.14

0.026

0.026

6.2

6.2

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Phosgenite

2.114

2.14

0.026

0.026

6.2

6.2

 

 

 

 

Gems, R Webster, 5th edition 1994 

Phosgenite

2.114

2.145

0.028

0.028

6.13

6.2

2.140

2.145

2.114

2.118

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

Phosgenite

2.117

2.145

0.028

0.028

6.13

6.13

2.145

2.145

2.117

2.117

Gemmological Tables, Ulrich Henn, 2004 

Phosgenite

2.117

2.145

0.028

0.028

6.09

6.2

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Phosgenite

2.14

2.118

0.028

0.028

6

6.3

2.140

2.145

2.114

2.118

http://www.geminterest.com 

Phosgenite

 

 

0.028

0.028

6.13

6.13

2.140

2.145

2.114

2.118

Joel Arem, Color Encyclopedia of Gemstones, 1987 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)