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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

Rhodonite

1.72

1.733

0.013

0.013

3.66

3.69

 

Lafaiete de Ciencias, Minas Gerais, Brazil

 

 

 

 

 

 

 

strong band at 410nm, weak lines at 430 and 460nm, moderate line at 500nm, wide band at 520-560nm

inert to very weak red

inert to very weak red

Gems & Gemology 2004 fall, p260

Rhodonite

1.72

1.743

0.013

0.016

3.64

3.73

red, transparent

Minas Gerais, Brazil

 

1.720

1.729

1.726

1.734

1.733

1.743

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2000 Sep, p151-154

Rhodonite

1.722

1.734

0.012

0.012

3.61

3.61

pink+black opaque

 

 

 

 

 

 

 

 

 

 

 

ACAM labo 

Rhodonite

1.726

1.73

0.004

0.004

3.69

3.69

red

Broken Hill, New South Wales, Australia

2.09ct, transparent

 

 

 

 

 

 

broad absorption between 540-560nm, lines at 422, 451, 463, 509nm

inert

inert

GIA Gem Database  35496

Rhodonite

1.73

1.73

 

 

3.41

3.72

pink

Woods mine, New South Wales, Australia

cabochons, translucent, aggregate, mottled texture

 

 

 

 

 

 

bands at 420 and 548nm, weaker bands at 440 and 455nm

 

 

Gems & Gemology 1997 Fall, p225-227

Rhodonite

1.732

1.745

 

 

3.65

3.65

 

Broken Hill, New South wales, Australia

 

1.732

1.732

 

 

1.745

1.745

lines at 408 and 412, broad band at 548

dull dark red

dull dark red

Gems & Gemology 2005 Fall p248

 

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

Rhodonite

1.711

1.752

0.01

0.014

3.4

3.8

1.711

1.738

 

 

1.723

1.752

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

Rhodonite

1.711

1.751

0.013

0.014

3.4

3.76

1.711

1.738

1.715

1.741

1.724

1.751

Gemmological Tables, Ulrich Henn, 2004 

Rhodonite

1.711

1.752

0.011

0.014

3.57

3.76

 

 

 

 

 

 

http://www.gemmology.be 

Rhodonite

1.711

1.752

0.011

0.014

3.57

3.76

1.711

1.738

1.716

1.741

1.723

1.752

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Rhodonite

1.711

1.752

0.011

0.014

3.57

3.76

1.711

1.738

1.716

1.741

1.723

1.752

http://www.geminterest.com 

Rhodonite

1.711

1.752

0.011

0.014

3.57

3.76

1.711

1.738

1.716

1.740

1.723

1.752

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

Rhodonite

1.716

1.752

0.01

0.014

3.4

3.74

1.716

1.738

 

 

1.723

1.752

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Rhodonite

1.72

1.747

0.01

0.013

3.4

3.7

 

 

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Rhodonite

1.73

1.73

0.01

0.01

3.4

3.7

 

 

 

 

 

 

Gems, R Webster, 5th edition 1994 

Rhodonite

1.733

1.747

0.01

0.01

3.4

3.7

 

 

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

Rhodonite

pink

Mn²+ in octahedral coordination with minor Fe²+; Mn³+ in octahedral coordination

Gems & Gemology Summer 1988

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

fluorite

Rhodonite

Gems & Gemology 2005 Fall p254

galena

Rhodonite

Gems & Gemology 2005 Fall p254

pyrrhotite

Rhodonite

Gems & Gemology 2005 Fall p254

quartz

Rhodonite

Gems & Gemology 2005 Fall p254

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Rhodonite

 

Broken Hill

New South Wales

Australia

Gems & Gemology 2005 Fall, p246-254

Rhodonite

 

Conselheiro Lafaiete

Minas Gerais

Brazil

Gems & Gemology 2004 fall, p260

Rhodonite

Departementa Ampanihy

Atsimo Andrefana region

Toliara (Tuléar) Province

Madagascar

Gemmologie, Dez 1999,p196

Rhodonite

 

Same

Kilimanjaro Region

Tanzania

Gems & Gemology 2000 winter p325

 

CHEMICAL DATA (%)