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INVESTIGATIONS

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

Cerussite

 

 

 

 

6.47

6.47

white

Morocco

cabochon, cat's eye, translucent

 

 

 

 

 

 

 

inert

orangy yellow

ACAM lab  4390

Cerussite

 

 

 

 

6.54

6.54

light brownish yellow

 

42.08ct, transparent, RI OTL, biaxial optic figure

 

 

 

 

 

 

 

very weak yellow

inert

Gems & Gemology 2016 Spring, p 68

 

TABLES

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

Cerussite

1.8

2.08

0.27

0.278

6.44

6.6

 

 

 

 

 

 

Gemmo.eu 

Cerussite

1.803

2.076

0.273

0.273

6.46

6.57

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Cerussite

1.803

2.078

0.273

0.274

6.46

6.57

1.803

1.804

 

 

2.076

2.078

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

Cerussite

1.803

2.079

0.273

0.274

6.46

6.58

 

 

 

 

 

 

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

Cerussite

1.804

2.078

0.274

0.274

6.55

6.55

 

 

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Cerussite

1.804

2.079

0.274

0.274

6.4

6.6

1.804

1.805

2.076

2.076

2.078

2.079

http://www.geminterest.com 

Cerussite

1.804

2.078

0.274

0.274

6.46

6.57

1.804

1.804

2.076

2.076

2.078

2.078

Gemmological Tables, Ulrich Henn, 2004 

Cerussite

1.804

2.079

0.274

0.274

6.46

6.57

 

 

 

 

 

 

http://www.gemmology.be 

Cerussite

1.804

2.078

0.274

0.274

6.46

6.57

 

 

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Cerussite

1.804

2.079

0.274

0.274

6.55

6.55

1.804

1.804

2.076

2.076

2.079

2.079

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Cerussite

1.804

2.078

0.274

0.274

6.46

6.57

 

 

 

 

 

 

Gems, R Webster, 5th edition 1994 

Cerussite

1.804

2.079

0.274

0.274

6.45

6.55

 

 

 

 

 

 

Gemology Tools Professional 2010

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

cuprite

Cerussite

http://www.mindat.org

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Cerussite

Tsumeb Mine (Tsumcorp Mine)

Tsumeb

Otjikoto Region

Namibia

Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification (2006),  873pp







 

CHEMICAL DATA