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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

Magnesite

1.52

1.7

0.18

0.18

3.16

3.16

colourless

Brumado, Bahia, Brazil

12.93ct

 

 

 

 

 

inert

inert

GIA Gem Database  35411

Magnesite

1.6

1.6

 

 

2.9

2.9

lime-green

Kambalda mine, Western Australia

called "citron Chrysoprase", hardness 4-5

 

 

 

 

 

pale whitish

strong bluish white

The Australian Gemmologist 1982 may, p231-233

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Magnesite

1.508

1.717

0.19

0.202

3

3.12

1.508

1.515

1.700

1.717

http://www.geminterest.com 

Magnesite

1.509

1.719

0.189

0.192

2.96

2.98

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Magnesite

1.509

1.719

0.189

0.202

2.96

3.12

1.509

1.527

1.700

1.719

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

Magnesite

1.509

1.719

0.191

0.199

2.92

3.12

1.509

1.527

1.700

1.719

Gemmological Tables, Ulrich Henn, 2004 

Magnesite

1.509

1.717

0.189

0.192

3

3.12

 

 

 

 

http://www.gemmology.be 

Magnesite

1.509

1.717

0.191

0.202

3

3.12

1.509

1.515

1.700

1.717

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Magnesite

1.509

1.717

0.182

0.192

2.97

3.12

1.509

1.515

1.700

1.717

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

Magnesite

1.515

1.718

0.202

0.202

3

3.12

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Magnesite

1.515

1.717

0.202

0.202

3

3.12

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Magnesite

1.515

1.717

0.202

0.202

3

3.12

 

 

 

 

Gems, R Webster, 5th edition 1994 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)