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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

Sapphirine

1.7

1.707

0.007

0.007

3.43

3.43

brownish orangy red

Tunduru, Tanzania

 

 

 

 

 

 

 

lines in the red, Cr

weakly chalky green

inert

Gems & Gemology 1998 summer, p132

Sapphirine

1.701

1.711

0.007

0.007

3.49

3.5

grey, light green, red

Tunduru, Tanzania

transparent

1.701

1.704

 

 

1.708

1.711

 

red stone: weak orange

red stone: dull red

Gems & Gemology 2007 winter, p379

Sapphirine

1.701

1.707

0.006

0.006

3.51

3.51

purplish pink

 

 

1.701

1.701

1.705

1.705

1.707

1.707

 

 

 

Gems & Gemology 1985 fall p176-177

Sapphirine

1.701

1.711

0.006

0.007

3.42

3.51

blue to greyish blue

Sri Lanka

up to 0.69ct

1.701

1.704

1.705

1.708

1.707

1.711

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2001 Jun, p112-115

Sapphirine

1.701

1.709

0.008

0.008

3.53

3.53

bluish grey

Sri Lanka

0.6ct

 

 

 

 

 

 

 

 

 

ACAM Lab  2288

Sapphirine

1.704

1.71

0.006

0.006

3.45

3.45

blue

 

0.90ct

1.704

1.705

 

 

1.707

1.710

 

 

 

The Journal of Gemmology 1987 Vol 20, N°7/8, p409

Sapphirine

1.704

1.71

0.006

0.006

3.56

3.56

dark greyish blue

Sri Lanka

1.72ct

 

 

 

 

 

 

 

inert

inert

GIA Gem Database  33479

Sapphirine

1.711

1.718

0.007

0.007

3.5

3.5

dark brown green

Bo Rai, Thailand

 

 

 

 

 

 

 

 

inert

inert

Gems & Gemology 1987 Summer, p108

 

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

Sapphirine

1.7

1.735

0.005

0.007

3.4

3.56

 

 

 

 

 

 

Gemmo.eu 

Sapphirine

1.701

1.724

0.005

0.007

3.42

3.51

1.701

1.717

1.705

1.722

1.707

1.724

Gemmological Tables, Ulrich Henn, 2004 

Sapphirine

1.701

1.723

0.006

0.006

3.4

3.51

1.701

1.716

 

 

1.707

1.723

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Sapphirine

1.701

1.718

0.006

0.007

3.4

3.58

1.701

1.711

 

 

1.707

1.718

Gems, R Webster, 5th edition 1994 

Sapphirine

1.701

1.734

0.004

0.007

3.4

3.58

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Sapphirine

1.701

1.734

0.005

0.007

3.4

3.58

1.701

1.726

1.703

1.728

1.705

1.734

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

Sapphirine

1.701

1.723

0.006

0.006

3.4

3.51

 

 

 

 

 

 

Gemology Tools Professional 2010

Sapphirine

1.707

1.734

0.005

0.008

3.4

3.51

1.707

1.729

1.703

1.733

1.705

1.734

http://www.geminterest.com 

Sapphirine

1.714

1.723

0.006

0.006

3.4

3.5

 

 

 

 

 

 

http://www.gemmology.be 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

apatite

Sapphirine

The Journal of Gemmology 1991, Vol 22, N°3, p136-140

phlogopite

Sapphirine

Gems & Gemology 1985 Fall p177

zircon

Sapphirine

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2001, Jun p114

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Sapphirine

 

Tunduru

Ruvuma Region

Tanzania

Gems & Gemology 2007 Winter, p379

Sapphirine

 

Bo Rai

 

Thailand

Gems & Gemology 1987 Summer, p108

 

CHEMICAL DATA (%)

Stone

Colour

Locality

Reference

SiO2

Al2O3

MgO

FeO

CaO

Na2O

B2O3

P2O5

Sapphirine

blue

 

Sri Lanka

Gemmologie, Zeitschrift der deutschen gemmologischen Gesellschaft, 2001, Jun p115

15.08

62.17

21.68

2.04

 

 

 

 

Sapphirine

 

Kolonne

Sri Lanka

The Journal of Gemmology 1990, Vol 22, N°3, p136-140

14.4

63.8

19.2

1.83

0.08

<0.1

0.28

0.04

Sapphirine

 

Kolonne

Sri Lanka

The Journal of Gemmology 1990, Vol 22, N°3, p136-140

14.9

61.9

19.9

1.7

 

 

 

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