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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

Vesuvianite

1.699

1.703

0.004

0.004

3.38

3.38

grey-blue

Pakistan

0.25ct

 

 

 

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2013 62/1-2, Jun, p37

Vesuvianite

1.702

1.706

0.004

0.004

3.4

3.42

yellowish green

Madagascar

0.26ct

 

 

 

 

 

nearly inert

nearly inert

Gems & Gemology 2002 Spring, p101

Vesuvianite

1.702

1.709

0.007

0.007

 

 

yellowish brown

 

pleochroism: strong olive green/dark orange

 

 

 

 

 

 

 

The Journal of Gemmology 1983 N°8, p738-745

Vesuvianite

1.705

1.706

0.001

0.001

3.35

3.35

yellowish-brown

 

1.71ct

 

 

 

 

 

 

 

The Journal of Gemmology 1986 Vol 20, N°1, p37

Vesuvianite

1.706

1.711

0.005

0.005

 

 

dark orange brown

Laurel, Québec, Canada

pleochroism: strong olive green/orange brown

 

 

 

 

 

 

 

The Journal of Gemmology 1983 N°8, p738-745

Vesuvianite

1.71

1.71

 

 

3.36

3.36

yellow-green

Feather River, California, USA

known as californite or Pulga jade; 1ea

 

 

 

 

strong 464nm band

inert

inert

Gems & Gemology 2001 spring, p74

Vesuvianite

1.712

1.72

 

 

3.39

3.41

 

South of Nairobi, Kenya

chelsea : greyish pink

 

 

 

 

461nm

inert

inert

Gems & Gemology 2002 spring, p100

Vesuvianite

1.712

1.723

0.001

0.003

3.33

3.45

light yellow-green, green

Kenya

 

1.712

1.722

1.713

1.723

461nm line, some 529nm line, some Cr lines

inert

inert

http://www.geminterest.com/ 2010

Vesuvianite

1.712

1.717

 

 

 

 

light green

Jeffrey Mine, Asbestos, Québec, Canada

Birefringence not visible; pleochroism: distinct green/greenish yellow

 

 

 

 

 

 

 

The Journal of Gemmology 1983 N°8, p738-745

Vesuvianite

1.714

1.736

0.002

0.005

3.35

3.4

greenish brown

Bellecombe and Montjovet, Valle d'Aosta, Italy

 

1.714

1.731

1.717

1.736

line at 471nm

 

 

The Journal of Gemmology 1994 24, 3, p173-177

Vesuvianite

1.715

1.718

 

 

 

 

olive green

Jeffrey Mine, Asbestos, Québec, Canada

Birefringence not visible; pleochroism: strong green and orange

 

 

 

 

 

 

 

The Journal of Gemmology 1983 N°8, p738-745

Vesuvianite

1.717

1.72

0.003

0.003

3.39

3.39

yellow

Mount Meru, Arusha, Tanzania

4.38ct

 

 

 

 

broad absorption below 450, lines at 467, 533

inert

inert

GIA Gem Database  34385

Vesuvianite

1.718

1.72

0.002

0.002

3.39

3.39

orangy yellow

Kenya

3.17ct

 

 

 

 

broad absorption below 420, line at 468nm

inert

inert

GIA Gem Database  35543

Vesuvianite

1.72

1.734

0.014

0.014

3.4

3.4

dark orangy yellow

Mount Meru, Arusha, Tanzania

8.23ct

 

 

 

 

broad absorption below 470, line at 533nm

inert

inert

GIA Gem Database  34386

Vesuvianite

1.725

 

 

 

 

 

greenish brown

Laurel, Québec, Canada

Birefringence not visible; pleochroism: strong dark olive green/ orange

 

 

 

 

 

 

 

The Journal of Gemmology 1983 N°8, p738-745

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Vesuvianite

1.655

1.761

0.001

0.018

3.32

3.47

 

 

 

 

http://www.gemmology.be 

Vesuvianite

1.655

1.761

0.004

0.018

3.32

3.47

1.655

1.750

1.674

1.761

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Vesuvianite

1.655

1.761

0.001

0.018

3.32

3.47

1.655

1.750

1.674

1.761

http://www.geminterest.com 

Vesuvianite

1.655

1.761

0.004

0.018

3.32

3.47

1.655

1.750

1.674

1.761

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

Vesuvianite

1.698

1.723

0.001

0.012

3.3

3.5

1.702

1.723

1.698

1.721

Gemmological Tables, Ulrich Henn, 2004 

Vesuvianite

1.7

1.723

0.002

0.012

3.3

3.5

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Vesuvianite

1.7

1.712

0.005

0.005

3.25

3.47

 

 

 

 

Gems, R Webster, 5th edition 1994 

Vesuvianite

1.7

1.721

0.001

0.012

3.25

3.5

 

 

 

 

Gemology Tools Professional 2010

Vesuvianite

1.7

1.753

0.001

0.01

3.24

3.48

 

 

 

 

Gemmo.eu 2013

Vesuvianite

1.701

1.732

0.005

0.006

3.3

3.5

1.704

1.732

1.701

1.715

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

Vesuvianite

1.703

1.71

0.001

0.005

3.32

3.47

1.703

1.705

1.704

1.710

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

Vesuvianite

1.705

1.71

0.005

0.005

3.25

3.43

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Vesuvianite

1.706

1.75

0.003

0.012

3.32

3.47

1.706

1.762

1.702

1.750

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

Vesuvianite

1.711

1.714

0.003

0.003

3.32

3.47

 

 

 

 

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

Vesuvianite

1.717

1.721

0.004

0.004

3.32

3.47

 

 

 

 

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

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

Vesuvianite

blue

Cu

http://minerals.caltech.edu

Vesuvianite

brown

Fe²+ -> Ti4+ charge transfer

Gems & Gemology Summer 1988

Vesuvianite

green

Fe³- in octahedral coordination, with possible influence of Fe³+ -> Fe³+ charge transfer

Gems & Gemology Summer 1988

Vesuvianite

lavender to brownish red

Mn³+

http://minerals.caltech.edu

Vesuvianite

yellow

O²- -> Fe³+ charge transfer

Gems & Gemology Summer 1988

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

magnetite

Vesuvianite

Gems & Gemology 2002 Spring, p101

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Vesuvianite

Bellecombe

Chatillon

Aosta Valley

Italy

The Journal of Gemmology 1994, Vol 24, N°3, p175

Vesuvianite

 

South of Nairobi

 

Kenya

Gems & Gemology 2002 spring p100

Vesuvianite

Pulga deposit, North Fork, Feather river

Butte County

California

USA

 Gems & Gemology 2001 spring, p74

 

CHEMICAL DATA (%)

Stone

Colour

Locality

Reference

SiO2

Al2O3

MnO

MgO

FeO

TiO2

CaO

Na2O

Cr2O3

Vesuvianite

greenish brown

Bellecombe and Montjovet, Valle d'Aosta

Italy

The Journal of Gemmology 1994, Vol 24, N°3, p175

36.95

16.43

0.06

2.33

3.3

1.04

36.14

0.02

0.04