Gemsdat
 

                Home            Gemstones

 

      

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

Barite

1.63

1.64

0.01

0.01

4.6

4.6

colourless

Lake Magadi, Rift Valley, Kenya

13.59ct

 

 

 

 

 

 

 

inert

inert

GIA Gem Database  34335

Barite

1.63

1.642

0.012

0.012

4.53

4.53

yellowish

Madagascar

0.44ct

 

 

 

 

 

 

 

inert

red-brown

ACAM lab  930

Barite

1.632

1.648

0.016

0.016

4.68

4.68

yellowish

Madagascar

0.47ct

 

 

 

 

 

 

 

inert

bluish

ACAM lab  929

Barite

1.637

1.65

0.013

0.013

4.49

4.49

 

Alenquer, Para, Brazil

 

 

 

 

 

 

 

 

inert

inert

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2010 59/3-4, p103-105

Barite

1.64

1.65

0.01

0.01

4.64

4.64

orangy yellow

Cumbria, UK

6.99ct

 

 

 

 

 

 

 

inert

inert

GIA Gem Database  35344

 

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

Barite

1.632

1.65

0.01

0.018

4.3

4.6

1.632

1.636

1.634

1.638

1.647

1.650

http://www.geminterest.com 

Barite

1.634

1.649

0.012

0.012

4.3

4.6

 

 

 

 

 

 

Gemology Tools Professional 2010

Barite

1.635

1.65

0.01

0.013

4.3

4.6

 

 

 

 

 

 

Gemmo.eu 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

1.636

1.636

 

 

1.648

1.648

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

Barite

1.636

1.648

0.012

0.012

4.48

4.51

1.636

1.636

1.637

1.637

1.648

1.648

Gemmological Tables, Ulrich Henn, 2004 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

 

 

 

 

 

 

http://www.gemmology.be 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

 

 

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

1.636

1.636

1.637

1.637

1.648

1.648

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Barite

1.636

1.648

0.012

0.012

4.47

4.5

 

 

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

1.636

1.636

1.637

1.637

1.648

1.648

Gems, R Webster, 5th edition 1994 

Barite

1.636

1.648

0.012

0.012

4.3

4.6

 

 

 

 

 

 

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

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

Barite

blue

O- radiation-damage centers

http://minerals.caltech.edu

Barite

honey-yellow, blue

SO³-  radiation-damage centers

http://minerals.caltech.edu

Barite

yellow

SO²-  radiation-damage centers

http://minerals.caltech.edu

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

cinnabar

Barite

The Journal of Gemmology 1994, 24,1, p46

stibiconite

Barite

www.mindat.org

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Barite

 

Alenquer

Para

Brazil

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2010, 59/3-4, p103-105

Barite

Rock Candy mine

Grand Forks

British Columbia

Canada

Joel Arem, Color Encyclopedia of Gemstones, 1987

Barite

 

Thunder Bay District

Ontario

Canada

Joel Arem, Color Encyclopedia of Gemstones, 1987

Barite

 

 

Cumbria

England

Joel Arem, Color Encyclopedia of Gemstones, 1987

Barite

 

Meade County

South Dakota

USA

Joel Arem, Color Encyclopedia of Gemstones, 1987