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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

Jadeite

1.64

1.668

0.012

0.02

3.23

3.52

green

Vizcaino Peninsula, Sierra San Andres, Baja California, Mexico

 

1.640

1.652

1.643

1.645

1.654

1.668

 

inert or white

pale green

The Journal of Gemmology 2010 Vol 32, N1-4, p1-13

Jadeite

1.65

1.68

 

 

3.27

3.34

bluish green

Montagua Valley, Guatemala

described as "Olmec Imperial" and "New Blue"; translucent up to a thickness of 5mm

 

 

 

 

 

 

 

 

 

Gems & Gemology 2002 winter p353

Jadeite

1.65

1.67

 

 

3.2

3.34

very dark green, bluish green, white, green

Guatemala

granular appearance with eye visible crystals

 

 

 

 

 

 

437 nm (except in black-green), green stones: Cr lines

 

 

Gems & Gemology 1990 summer p134-141

Jadeite

1.65

1.67

 

 

3.25

3.4

green, white, brownish orange, lavender; "moss in snow"

Myanmar

 

 

 

 

 

 

 

437nm, Cr band common in green

 

 

Gems & Gemology 1990 summer p134-141

Jadeite

1.65

1.66

 

 

3.1

3.35

green, lavender

Itoigawa and Tottori, Japan

spot RI

 

 

 

 

 

 

 lines at 690, 650, and 630 nm,  green jadeite sharp line at 437 nm; lavender jadeite weak bands at  530 and 600 nm and a narrow band at 437 nm.

inert

green and blue: inert; lavender: reddish

Gems & Gemology 2017 Spring, p48-67

Synthetic jadeite

1.652

1.655

 

 

3.22

3.31

medium light green to dark greyish green, medium and dark purple

 

produced by General Electric, hardness : 7.5 - 8, cabochons up to 2.46ct

 

 

 

 

 

 

no 437 nm line

 

 

Gems & Gemology 1987 Spring p27-35

Jadeite

1.653

1.665

 

 

3.325

3.333

black (greyish-black, "black-skin-chicken"); cause of colour : dust-like and opaque microgranular material

 

compact fine- to coarse-grained aggregate of xx in an interlocking granular structure; opaque to translucent, hardness 7

 

 

 

 

 

 

 

inert

inert

The Journal of Gemmology 1999 Vol 26, N7, p417-424

Jadeite

1.654

1.67

0.016

0.016

3.34

3.34

green

 

 

 

 

 

 

 

 

437nm line

 

 

ACAM labo 

Jadeite

1.655

1.67

 

 

3.29

3.29

green and white

Russia

 

 

 

 

 

 

 

typical green jadeite spectrum

very weak to weak mottled blue-white

moderate mottled blue-white

Gems & Gemology 1996 Summer, p131

Jadeite

1.66

1.66

 

 

3.3

3.31

bright medium green

Longkin, Myanmar (exploitation from 1997)

"Hte long sein"variety, poor transparency; chelsea filter: green,

 

 

 

 

 

 

 

inert

inert

The Journal of Gemmology 2001 Vol 27, N6,p321-327

Jadeite

1.66

1.66

 

 

 

 

mottled brownish green

 

carved lid to an urn, nephrite-like appearance

 

 

 

 

 

 

437nm line, Cr-lines

 

 

Gems & Gemology 1997 Fall, p215

Jadeite

1.66

1.66

 

 

 

 

green and white

 

polymer impregnation, 8.25 ct variegated green and white carving, spot RI

 

 

 

 

 

 

Cr-lines

inert

inert

Gems & Gemology 1997 Fall, p214-215

Jadeite

 

 

 

 

 

 

green

 

carving, dyed, impregnated, assembled

 

 

 

 

 

 

437nm band,  broader band from 630 to 670 nm (dye)

 

 

Gems & Gemology 2002 Spring, p82-83

 

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

Jadeite

1.64

1.673

0.012

0.02

3.21

3.36

1.640

1.658

1.645

1.663

1.652

1.673

http://www.geminterest.com 

Jadeite

1.64

1.665

0.012

0.02

3.25

3.38

1.640

1.660

 

 

1.652

1.665

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

Jadeite

1.64

1.667

0.012

0.02

3.25

3.36

 

 

 

 

 

 

http://www.gemmology.be 

Jadeite

1.64

1.667

0.012

0.02

3.25

3.36

1.640

1.640

1.645

1.645

1.652

1.667

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Jadeite

1.64

1.667

0.012

0.02

3.25

3.36

1.640

1.640

1.645

1.645

1.652

1.667

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

Jadeite

1.64

1.688

 

 

3.25

3.4

 

 

 

 

 

 

Gemology Tools Professional 2010

Jadeite

1.65

1.666

0.01

0.016

3.3

3.36

 

 

 

 

 

 

Gemmo.eu 2013

Jadeite

1.654

1.667

0.013

0.013

3.3

3.38

1.654

1.654

1.659

1.659

1.667

1.667

Gemmological Tables, Ulrich Henn, 2004 

Jadeite

1.654

1.667

0.013

0.013

3.3

3.36

 

 

 

 

 

 

Gems, R Webster, 5th edition 1994 

Jadeite

1.66

1.67

 

 

3.3

3.5

 

 

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Jadeite

1.66

1.688

0.02

0.02

3.3

3.38

 

 

 

 

 

 

Bestimmungstabellen fr Edelsteine, Birgit Gnther, 2008 

Jadeite

1.66

1.68

0.02

0.02

3.3

3.4

 

 

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

Jadeite

black

dust-like and opaque microgranular material.

The Journal of Gemmology 1999, Vol 26, N7, p422-423

Jadeite

emerald green

Cr+ in octahedral coordination

Gems & Gemology Summer 1988

Jadeite

violet

Fe+-O-Fe+ charge transfer; synthetic is coloured by Mn+

Gems & Gemology Summer 1988

Jadeite

yellowish green

Fe+ in octahedral coordination

Gems & Gemology Summer 1988

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

chromite

Jadeite

The Journal of the Gemmological Association of Hongkong Vol XVIII 1995, p8

copper

Jadeite

Gems & gemology spring 1996 p46

pyrite

Jadeite

Gems & gemology summer 1990 p134-141

vesuvianite

Jadeite

Gems & gemology summer 2007 p160

zircon

Jadeite

Gems & gemology spring 1998, p45

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Jadeite

 

Sierra del Convento

Guantanamo Province

Cuba

Garcia-Casco, A. et al (2009) Contributions to Mineralogy and Petrology, 158, #1, 1-16.

Jadeite

Manzanal, in the Motagua Valley

Sierra de las Minas

 

Guatemala

Gems & Gemology 2002 winter p353

Jadeite

Hime River (Himekawa), Itoigawa, Niigata Prefecture

Chubu region

Honshu Island

Japan

Gems & Gemology Fall 2010, p210

Jadeite

Kotaki River, Itoigawa, Niigata Prefecture

Chubu Region

Honshu Island

Japan

Lapis 2003(1), 50

Jadeite

Sierra San Andres, Vizcaino Peninsula

Muleg

Baja California Sur

Mexico

The Journal of Gemmology (2010), Vol. 32, No. 1–4.

Jadeite

Hpakan region

Myitkyina-Mogaung district

Kachin State

Myanmar

Minerals and their Localities, Jan H.Bernhard and Jaroslav Hyrsi, 2004

Jadeite

Lonkin, Hpakan region

Myitkyina-Mogaung district

Kachin State

Myanmar

The Journal of Gemmology 2001 Vol 27, N6,p321-327

Jadeite

Khamti (Hkamti) region

Sagaing Division

Mandalay

Myanmar

Gems & Gemology Fall 2010, p210

Jadeite

Borusskoe (Kashkarakskoe) deposit, Western Sayan range, Sayan Mts

Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai)

Eastern-Siberian Region

Russia

Gems & Gemology Fall 2010, p210

Jadeite

Vitim River, Chitinskaya Oblast'

Transbaikalia (Zabaykalye)

Eastern-Siberian Region

Russia

Gems & Gemology Fall 2010, p210

Jadeite

 

Kechpel

Oeral

Russia

MinRec 32:42

Jadeite

Orhaneli, Tavsanlı Zone

Bursa Province

Marmara Region

Turkey

Okay, A.I. (2002): Journal of Metamorphic Geology 20, 757-768.

 

CHEMICAL DATA

Stone

Colour

Locality

Reference

SiO2

Al2O3

MnO

MgO

FeO

TiO2

CaO

Na2O

Cr2O3

ZnO

Fe2O3

K2O

H2O

NiO

Ce2O3

SO3

Nb2O5

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

58.099

20.32

0.123

2.825

 

0.046

4.267

12.803

 

0.021

2.128

0.009

 

 

0.017

0.014

0.015

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

59.446

25.205

0.031

0.046

 

 

0.104

15.281

 

 

0.033

 

 

 

 

0.009

 

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

58.248

18.194

0.06

4.655

 

0.034

6.418

11.503

 

0.004

1.598

0.003

 

 

 

0.006

 

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

57.474

13.929

0.046

7.33

 

0.082

10.261

9.274

 

0.016

2.464

0.029

 

0.017

 

0.019

 

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

57.214

13.092

0.117

8.558

 

0.125

11.931

8.364

 

0.075

1.912

0.018

 

0.007

 

0.016

0.004

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

56.498

13.107

0.13

8.264

 

0.046

11.557

8.415

 

0.052

2.83

0.006

 

 

0.02

0.013

 

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

58.656

22.606

0.041

1.514

0.361

 

2.364

13.803

 

0.021

0.55

 

 

 

0.023

0.01

 

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

59.476

23.425

0.044

0.894

0.381

 

1.254

14.554

 

 

0.579

0.003

 

 

0.01

 

0.004

Jadeite

black

 

 

The Journal of Gemmology 1999, Vol26, N7, p421

58.989

22.647

0.058

1.595

 

 

2.323

14.043

 

0.021

1.678

0.017

 

 

0.016

0.003

0.014

Jadeite

 

Manzanal

Guatemala

Gems & Gemology 1990 summer p 140

58.21

23.72

0.04

1.2

0.24

0.04

1.79

13.07

 

 

0.91

0.18

0.46

 

 

 

 

Jadeite

pea green

Manzanal

Guatemala

Gems & Gemology 1990 summer p 140

58.12

20.32

0.07

2.16

0.77

0.31

3.13

12.43

 

 

2.49

0.1

0.16

 

 

 

 

Jadeite

white

Itoiga

Japan

Gems & Gemology 2017 Spring p62-63

58.82

24.3

 

0.12

0.44

0.03

0.26

15.49

 

 

 

 

 

 

 

 

 

Jadeite

light green

Chauk-oo Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.5

23.66

 

0.29

 

 

1.21

12.93

0.23

 

1.11

 

 

 

 

 

 

Jadeite

light yellow

Chauk-oo Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.65

23.16

 

0.33

 

 

1.22

12.93

0.21

 

1.32

 

 

 

 

 

 

Jadeite

light yellow

Chauk-oo Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.55

23.58

 

0.36

 

 

1.22

13.28

0.2

 

1.06

 

 

 

 

 

 

Jadeite

green

Ka-tone-yat Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

58.64

17.51

 

3.17

 

 

5.4

11.65

0.12

 

1.97

 

 

 

 

 

 

Jadeite

green

Longkin

Myanmar

The Journal of Gemmology 2001, Vol27, N6, p326

57.99

20.73

0.04

2.33

1.14

0.23

2.79

13.71

1.2

 

 

0.03

 

 

 

 

 

Jadeite

lavender

Mar-sar Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.8

24.18

 

0.01

 

 

0.33

13.44

0.22

 

0.93

 

 

 

 

 

 

Jadeite

brownish yellow

Maw-maung Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.79

22.8

 

0.6

 

 

1.47

12.56

0.1

 

1.13

 

 

 

 

 

 

Jadeite

brownish yellow

Met-lin Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

58.95

22.16

 

0.85

 

 

1.9

12.99

1.16

 

1.4

 

 

 

 

 

 

Jadeite

light yellowish green

Nant Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.67

23.04

 

0.05

 

 

0.72

15.52

 

 

0.98

 

 

 

 

 

 

Jadeite

green

Nant Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

56.14

15.34

 

9.88

 

 

10.84

5.66

0.7

 

1.42

 

 

 

 

 

 

Jadeite

light greenish yellow

Nant Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.79

23.11

 

0.75

 

 

1.71

12.48

0.03

 

1.37

 

 

 

 

 

 

Jadeite

light greenish yellow

Phakan-gyi Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.42

22.56

 

0.66

 

 

1.79

12.35

0.17

 

1.74

 

 

 

 

 

 

Jadeite

light greenish yellow

Phakan-gyi Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.08

22.24

 

0.8

 

 

1.82

12.86

0.28

 

1.44

 

 

 

 

 

 

Jadeite

light green

Tar-ma-khan Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

58.67

20.67

 

1.72

 

 

2.59

12.61

0.17

 

2.34

 

 

 

 

 

 

Jadeite

bluish

Tar-ma-khan Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.16

23.79

 

0.26

 

 

1.1

13.04

0.19

 

1.12

 

 

 

 

 

 

Jadeite

white

Whay-khar Maw

Myanmar

The Journal of Gemmology 1994, Vol24, N4, p271

59.45

23.27

 

0.5

 

 

1.32

13.02

0.03

 

1.12