Gemsdat
 

                Home            Gemstones

 

INVESTIGATIONS

Stone

RI min

RI max

Dens min

Dens max

Colour

Location

Info

Spectrum

UVS

UVL

Reference

Grossular

1.727

1.737

3.58

3.65

green to yellow-green

Altay Mts, China

 

 

 

 

Gems & Gemology 1993 winter, p273-277

Grossular

1.731

1.732

3.61

3.62

colourless

 

 

 

weak to moderate golden-yellow

weak to moderate golden-yellow

Gems & Gemology 1979 summer p162-173

Tsavorite - grossular

1.731

1.731

3.6

3.6

green

Merelani, Tanzania

 

none

weak greenish yellow

moderate orange

Gems & Gemology 2004 spring, p72-73

Grossular

1.731

1.754

3.57

3.67

colourless, green, orange

 

105 stones

 

 

 

Gems & Gemology 1982 Winter, p204-213

hessonite - Grossular

1.732

1.732

3.61

3.61

pale yellowish

Sri Lanka

2.85 ct

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2000 Mar, p1

Tsavorite - grossular

1.732

1.742

3.5

3.64

green

 

 

band 460nm and 610nm

 

 

Revue de  Gemmologie A.F.G. 1989 Jul, N° 99, p5-7

Tsavorite - grossular

1.732

1.732

3.74

3.74

light green

Merelani, Tanzania

 

 

yellow

inert

ACAM lab  2191

Grossular

1.732

1.738

3.62

3.62

colourless

Tanzania

 

 

strong apricot

weak apricot

The Journal of Gemmology 1975 N°5,p225-229

Grossular

1.733

1.734

 

 

colourless

Jeffrey Mine, Quebec, Canada

 

 

 

 

The Journal of Gemmology 1982 Vol18, N°2, p1126-130

Grossular

1.733

1.733

3.74

3.74

purplish red

Umba Valley, Tanga Region, Tanzania

9.22ct

broad absorption below 410nm; lines at 430, 500, 525, 575nm

inert

inert

GIA Gem Database  33278

hessonite - Grossular

1.734

1.738

3.58

3.64

orange

Elahera, Sri Lanka

 

547, 490, 435nm

inert

inert

Gems & Gemology 1986 Summer, p87

Grossular

1.735

1.735

3.5

3.5

colourless

 

 

 

medium orange

strong yellow

Gems & Gemology 1970 Winter, p253

Grossular

1.735

1.735

3.61

3.61

yellowish green

Lelatema Mts, Arusha Region, Tanzania

14.54ct

broad absorption below 420nm

very weak orange

weak orange-yellow

GIA Gem Database  34991

Grossular

1.735

1.735

3.61

3.61

mint green

 

2.73ct, composition: Grs99Adr1

 

 

 

Gems & Gemology 2011 Winter, p274

Grossular

1.736

1.738

3.58

3.6

yellow green

Kabanga, Voi, Kenya

 

 

moderate orange-yellow

weak to moderate red to moderate orange

Gems & Gemology 2009 spring p 65-66

Grossular

1.736

1.736

 

 

pink

Jeffrey Mine, Quebec, Canada

 

 

 

 

The Journal of Gemmology 1982 Vol18, N°2, p1126-130

hessonite - Grossular

1.736

1.741

 

 

orange

Jeffrey Mine, Quebec, Canada

 

 

 

 

The Journal of Gemmology 1982 Vol18, N°2, p1126-130

Grossular

1.737

1.737

3.61

3.61

yellow

Lelatema Mts, Arusha Region, Tanzania

16.95ct

broad absorption below 410nm

inert

inert

GIA Gem Database  33239

hessonite - Grossular

1.737

1.737

3.61

3.61

orangy yellow

Sri Lanka

12.36ct

broad absorption below 410nm

inert

inert

GIA Gem Database  33299

Tsavorite - grossular

1.737

1.74

3.63

3.65

green

Kalalani, Tanzania

 

 

 

 

Gems & Gemology  summer p116

Tsavorite - grossular

1.737

1.737

3.58

3.58

slightly yellowish green

Karo pit, Merelani Hills, Tanzania

chelsea: no reaction

broad absorption blocking out all of the violet and most of the blue, weak band at 580-610

very weak dull chalky orange

moderate dull chalky orange

Gems & Gemology 1990 summer, p142-148

Grossular

1.737

1.74

3.56

3.59

red

Sierra de la Cruces, Sierra Mojada, Coahuila, Mexico

translucent, cause of colour : Mn³+

 

 

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft 2012 61/1-2, p1-12

Grossular

1.738

1.738

3.61

3.62

light slightly orangy yellow to light orange-yellow

Lelatema Mts, 30km E of Merelani, Tanzania

3 stones

weak line at 430nm

weak to moderate yellowish orange

weak reddish orange

Gems & Gemology 2009 Winter, p299

Grossular

1.738

1.742

 

 

green

Jeffrey Mine, Quebec, Canada

 

 

 

 

The Journal of Gemmology 1982 Vol18, N°2, p1126-130

hessonite - Grossular

1.738

1.752

3.56

3.64

pale yellowish, orange to brown

Ghatpara, Orissa, India

 

 

 

 

The Journal of Gemmology 1994 24, 2, p 75-83

hessonite - Grossular

1.738

1.738

3.61

3.61

orangy yellow

Elahera, Central Province, Sri Lanka

25.65ct

broad absorption below 420nm

inert

inert

GIA Gem Database  34842

Tsavorite - grossular

1.738

1.738

3.61

3.61

yellowish green

Komolo, Arusha Region, Tanzania

3.65ct

broad absorption below 440nm

inert

inert

GIA Gem Database  35569

Grossular

1.739

1.739

3.61

3.61

yellow

Lelatema Mts, Arusha Region, Tanzania

6.57ct

broad absorption below 425nm

inert

inert

GIA Gem Database  33265

Grossular

1.739

1.75

3.61

3.63

yellowish green

Mali

4.18, 5.32 and 6.37ct, compositions between Gros97Andr03 and Gros90Andr10

band at 435-445 nm

inert

inert to faint orange

Gems & Gemology 1998 Fall, p221-222

hessonite - Grossular

1.739

1.4

3.63

3.64

yellowish orange, orange, and red-orange

Afghanistan

2.64 - 7.39 ct, did not show the roiled or oily appearance

Weak absorption bands at 430 and 490

inert

inert

Gems & Gemology 2004 Fall, p258

Grossular

1.739

1.74

3.64

3.64

light yellow-green, bicoloured

Kambanga, Kenya

0.61 ct, 0.42ct

 

very weak dark orange

very weak dark red

The Journal of Gemmology 2014 Vol 34, No 3, p195-197

Grossular

1.74

1.74

3.61

3.61

colourless

 

 

 

 

 

ACAM labo 

hessonite - Grossular

1.74

1.753

3.61

3.67

yellowish-orange, orange to orange-brown, reddish-brown

Madagascar

 

 

 

 

The Journal of Gemmology 2002 Vol28, N°4-236

Grossular

1.74

1.742

3.58

3.62

greenish brown, brown-green, brownish, yellowish green, green

Itrafo, Madagascar

 

 

inert

inert

Gems & Gemology 2012 Fall, p178-187

hessonite - Grossular

1.74

1.74

3.65

3.65

medium-dark brownish orange

Madagascar

1.86ct, cabochon

absorption bands at 440 and 500 nm

 

 

Gems & Gemology 1994 Sping, p51

Tsavorite - grossular

1.74

1.742

3.63

3.66

 

Madagascar

 

470 nm cutoff, band between 580 and 620 nm, and vague absorption between 620 and 700 nm

inert

inert

Gems & Gemology 1999 Winter, p217

hessonite - Grossular

1.74

1.74

3.68

3.68

red (dyed)

 

spot RI, 2.68ct

 

 

 

The Journal of Gemmology 2014 Vol 34, No 3, p204-205

hessonite - Grossular

1.741

1.741

3.62

3.62

brown

 

 

 

 

 

ACAM labo 

hessonite - Grossular

1.741

1.741

3.63

3.63

brownish yellow

 

 

 

 

 

ACAM labo 

Tsavorite - grossular

1.741

1.746

3.58

3.62

 

Bekily, Madagascar

 

band 608nm and 428nm

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1999 Jul p111-113

Tsavorite - grossular

1.741

1.741

3.61

3.61

green

Scorpion Mine, Taita Hills, Coast Province, Kenya

1.75ct

broad absorption below 490nm

inert

inert

GIA Gem Database  34358

hessonite - Grossular

1.741

1.741

 

 

orange

Somalia

1.05ct

faint band at 430nm

 

 

The Journal of Gemmology 2014 Vol 34, N°4, p 293

Tsavorite - grossular

1.742

1.742

3.62

3.62

green

Gogogogo, Madagascar

 

 

 

 

The Journal of Gemmology 1997 Vol 25, N°6, p391-393

hessonite - Grossular

1.743

1.747

3.61

3.63

brownish reddish orange

Kamburupitiya, Matara, Sri Lanka

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2008 57/1-2, p29-30

Tsavorite - grossular

1.743

1.743

3.64

3.64

emerald green

Swat Valley, Pakistan

86% grossular, 13% goldmanite

 

 

 

The Journal of Gemmology 1992 Vol23, N°2, p67-70

Grossular

1.743

1.743

3.62

3.62

greenish yellow

East Africa

68.55ct

 

 

 

Gems & Gemology 2005 Winter, p352

hessonite - Grossular

1.743

1.747

3.63

3.65

yellowish orange to orange to reddish orange

San Diego County, California

1.31 - 6.26 ct

 

 

 

Gems & Gemology 2007 Spring, p68-69

Grossular

1.744

1.744

3.64

3.64

green

Bekily, Madagascar

0.63ct

 

inert

inert

ACAM lab  2042

hessonite - Grossular

1.745

1.748

3.6

3.68

brownish-yellow

Tanzania

 

bands with maxima at 461, 431 and 369

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1997 Mar, p38-39

hessonite - Grossular

1.748

1.748

3.65

3.65

orange

Orissa, India

2.19ct

 

 

 

Gems & Gemology 1993 Summer, p133

hessonite - Grossular

1.75

1.756

3.58

3.64

pale yellowish, orange to brown

Dahikbala, Orissa, India

 

 

 

 

The Journal of Gemmology 1994 24, 2, p 75-83

hessonite - Grossular

1.751

1.751

3.637

3.637

orange

 

1.5ct

 

 

 

ACAM labo 

hessonite - Grossular

1.751

1.758

3.6

3.63

pale yellowish, orange to brown

Budhido, Orissa, India

 

 

 

 

The Journal of Gemmology 1994 24, 2, p 75-83

hessonite - Grossular

1.754

1.754

3.64

3.64

 

 

9.82ct, composition: Grs87Adr13

 

 

 

Gems & Gemology 2011 Winter, p274

hessonite - Grossular

1.755

1.755

3.65

3.65

 

 

1.25ct

 

 

 

Gems & Gemology 2011 Winter, p274

hessonite - Grossular

1.755

1.755

3.65

3.65

 

 

9.10ct, composition: Grs86Adr14

 

 

 

Gems & Gemology 2011 Winter, p274

hessonite - Grossular

1.759

1.763

3.6

3.66

pale yellowish, orange to brown

Burubura, Orissa, India

 

 

 

 

The Journal of Gemmology 1994 24, 2, p 75-83

Grossular

1.768

1.768

3.78

3.78

greenish yellow

Diakon, Kayes Region, Mali

3.59ct

broad absorption below 415nm, line at 438nm

inert

inert

GIA Gem Database  33223

 

TABLES

Stone

RI min

RI max

Dens min

Dens max

Reference

Tsavorite - Grossular

1.67

1.76

3.57

3.73

Gemology Tools Professional 2010

Grossular

1.72

1.8

3.4

3.78

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

Grossular

1.72

1.75

3.6

3.68

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Grossular

1.727

1.74

3.58

3.67

http://www.gemmology.be 

Grossular

1.727

1.771

3.57

3.67

Gemmo.eu 2013

Grossular

1.728

1.76

3.58

3.73

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

Grossular

1.73

1.759

3.55

3.73

Gemmological Tables, Ulrich Henn, 2004 

Grossular

1.73

1.785

3.57

3.72

http://www.geminterest.com 

hessonite - Grossular

1.73

1.757

3.57

3.73

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

hessonite - Grossular

1.73

1.757

3.6

3.75

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

Grossular

1.73

1.76

3.57

3.73

Gemology Tools Professional 2010

hessonite - Grossular

1.73

1.76

3.57

3.73

Gemology Tools Professional 2010

Grossular

1.732

1.759

3.57

3.73

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Tsavorite - Grossular

1.739

1.745

3.57

3.75

http://www.geminterest.com 

hessonite - Grossular

1.74

1.75

3.62

3.7

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

hessonite - Grossular

1.742

1.757

3.6

3.73

http://www.geminterest.com 

hessonite - Grossular

1.742

1.748

3.58

3.67

John Sinkakas, Gemstone and mineral data book,1972 

hessonite - Grossular

1.742

1.748

3.65

3.65

Gems, R Webster, 5th edition 1994 

Grossular

 

 

3.4

3.71

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Grossular

 

 

3.3

3.7

John Sinkakas, Gemstone and mineral data book,1972 

 

CAUSE OF COLOUR

Stone

Colour

Cause of colour

Reference

Tsavorite - grossular

green

V³+ in octahedral coordination

Gems & Gemology Summer 1988

Hessonite - Grossular

orange

Mn³+ in distorted cubic coordination; Fe³+

Gems & Gemology Summer 1988

Grossular

yellow, orange, orange-brown

Charge transfers Fe²+ -> Fe³+

Mr. Dominique Flies, La couleur des grenats, l’Université de Nantes, 2008

Hessonite - Grossular

orange

Charge transfer Fe²+ -> Fe³+

Mr. Dominique Flies, La couleur des grenats, l’Université de Nantes, 2008

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

apatite

Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

apatite

Hessonite - Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

apatite

Tsavorite - Grossular

Gemmologie Jul 1999, p112

calcite

grossular

The Journal of Gemmology, 2014, Vol 34, No 3, p195-197

calcite

Hessonite - Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

calcite

Tsavorite - Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

diopside

Hessonite - Grossular

Gemmological tables, Ulrich Henn, 2004

graphite

Tsavorite - Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

orthoclase

Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

pyrite

Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

quartz

Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

quartz

Tsavorite - Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

rutile

Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

rutile

Hessonite - Grossular

www.geminterest.com

spinel

Hessonite - Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

sulphur

grossular

The Journal of Gemmology, 2014, Vol 34, No 3, p195-197

titanite

grossular

The Journal of Gemmology, 2014, Vol 34, No 3, p195-197

zircon

Grossular

E.J. Gübelin and J.I. Koivula, Photoatlas of inclusions in Gemstones, volume 2 (2005)

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Grossular

Jeffrey Mine (Jeffrey Quarry), Asbestos, Shipton Township

Richmond County

Quebec

Canada

Joel Arem, Color Encyclopedia of Gemstones, 1987 

tsavorite-Grossular

Jeffrey Mine (Jeffrey Quarry), Asbestos, Shipton Township

Richmond County

Quebec

Canada

InColor Fall-Winter 2007-2008 p19

Grossular

Kabanga, Voi

Taita

Coast Province

Kenya

Gems & gemology Spring 2009 p65

tsavorite-Grossular

Scorpion Mine, Tsavo National Park

Voi, Taita

Coast Province

Kenya

The Journal of Gemmology, 2016, Vol 35, No. 1, p 22-24

Grossular

Itrafo (Trafo), Ampanivana area, Andrembesoa Commune, Betafo Department

Vakinankaratra Region (Betafo - Antsirabé region)

Antananarivo Province

Madagascar

Gems & Gemology 2012 Fal, p180

tsavorite-Grossular

Itrafo (Trafo), Ampanivana area, Andrembesoa Commune, Betafo Department

Vakinankaratra Region (Betafo - Antsirabé region)

Antananarivo Province

Madagascar

Gems & Gemology 2012 Fal, p180

hessonite-Grossular

Ilakaka gem deposit, Ilakaka, Departementa Ranohira

Horombe region

Fianarantsoa Province

Madagascar

Gemmologie, Dez 1999,p196

tsavorite-Grossular

Bekily Department

Southwestern Region

Tuléar (Toliara) Province

Madagascar

Gemmologie, Dez 1999,p196

tsavorite-Grossular

Ejeda, Ampanihy Department

Southwestern Region

Tulear Province

Madagascar

Gems & Gemology 2003 Fall p 231

Grossular

 

Tunduru-Songea area

Ruvuma Region

Tanzania

Gemmologie, 1997, Mar,p31

hessonite-Grossular

 

Tunduru-Songea area

Ruvuma Region

Tanzania

Gemmologie, 1997, Mar,p31

tsavorite-Grossular

 

Tunduru-Songea area

Ruvuma Region

Tanzania

Gemmologie, 1997, Mar,p31

tsavorite-Grossular

Umba

 

Tanga

Tanzania

Gems & Gemology 2001 Winter p331

 

CHEMICAL DATA

Stone

Colour

Locality

Reference

SiO2

Al2O3

MnO

MgO

FeO

TiO2

CaO

Na2O

Cr2O3

V2O3

Fe2O3

K2O

Grossular

colourless

East Africa

 

Gems & Gemology 1979 Summer p164

40.3

20.9

0.1

0.4

0.1

0.2

38

 

 

 

 

 

Grossular

dark green

East Africa

 

Gems & Gemology 1979 Summer p164

41.9

20.5

0.4

0.4

0.1

0.3

34.9

 

0.15

1.4

 

 

Grossular

medium green

East Africa

 

Gems & Gemology 1979 Summer p164

42.5

20.5

0.5

0.3

0.1

0.3

34.5

 

0.12

1.2

 

 

Grossular

medium green

East Africa

 

Gems & Gemology 1979 Summer p164

42.5

21.1

0.5

0.7

0.04

0.2

33.7

 

0.1

1.1

 

 

Grossular

medium green

East Africa

 

Gems & Gemology 1979 Summer p164

42.2

21.6

0.6

0.4

0.1

0.4

33.6

 

0.09

1

 

 

Grossular

medium green

East Africa

 

Gems & Gemology 1979 Summer p164

41.6

21.7

0.4

0.1

0.03

0.3

34.8

 

0.06

1

 

 

Grossular

light green

East Africa

 

Gems & Gemology 1979 Summer p164

42.8

21.5

0.2

0.5

0.1

0.3

34.5

 

 

0.11

 

 

Grossular

medium green

East Africa

 

Gems & Gemology 1979 Summer p164

43

20.5

0.6

0.3

0.1

0.2

34.5

 

0.09

0.7

 

 

Grossular

light green

East Africa

 

Gems & Gemology 1979 Summer p164

42.1

22.4

0.1

0.9

0.1

0.4

33.9

 

 

0.09

 

 

Grossular

very light green

East Africa

 

Gems & Gemology 1979 Summer p164

41.9

21.3

0.1

0.9

0.1

0.4

35.1

 

0.09

0.1

 

 

Grossular

dark green

East Africa

 

Gems & Gemology 1979 Summer p164

40.3

20.6

0.2

0.2

0

0.2

36.3

 

0.1

1.5

 

 

Grossular

colourless

East Africa

 

Gems & Gemology 1979 Summer p164

39.5

19.9

0.2

0.1

0.1

0.4

39.7

 

 

0.06

 

 

Grossular

dark green

East Africa

 

Gems & Gemology 1979 Summer p164

42

21

0.4

0.3

0.03

0.2

34.6

 

0.14

1.4

 

 

Grossular

colourless

East Africa

 

Gems & Gemology 1979 Summer p164

39.7

21.2

0.1

0.1

0.1

0.3

38.5

 

 

 

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

37.78

17.38

0.48

0.61

 

0.31

35.12

 

0.34

6.85

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

38.06

18.16

0.36

0.57

 

0.2

35.96

 

0.46

5.96

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

37.68

18.27

0.46

0.59

 

0.26

35.28

 

0.56

5.21

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

37.65

18.53

0.48

0.46

 

0.15

35.67

 

0.38

4.76

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

38.64

20.54

0.42

0.56

 

0.19

36.05

 

0.25

2.2

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

38.66

21.57

0.53

0.48

 

0.1

36.44

 

0.23

0.22

 

 

Grossular

 

East Africa

 

Zeitschrift der Deutschen Gemmologischen Gesellschaft, 1988, 37, Nr 1/2, 72

38.71

21.64

0.51

0.48

 

0.14

36.24

 

0.15

0.17

 

 

Grossular

near colourless

East Africa

 

Gems & Gemology 1979 Summer p164

43.3

22.8

0.1

1

0.1

0.3

32.3

 

 

0.05

0

 

Grossular

medium green

East Africa

 

Gems & Gemology 1979 Summer p164

41.9

20.5

0.3

0.4

 

0.2

35.5

 

0.02

1.2

 

 

Grossular

yellow

unknown

 

The Journal of Gemmology 2007,30,5/6,307-319

39.49

21.31

0.35

0.37

 

0.52

36.49

0.03

0.02

 

1.8

0.02

Grossular

colourless

Jeffrey Mine, Quebec

Canada

The Journal of Gemmology 1982, Vol 18, N°2, p128

39.8

22.1

0.1

 

0.4

 

38.3

 

0.2

 

 

 

Grossular

pink

Jeffrey Mine, Quebec

Canada

The Journal of Gemmology 1982, Vol 18, N°2, p128

39.4

21.9

0.5

 

0.5

0.2

37.8

 

0.2

 

 

 

Grossular

green

Jeffrey Mine, Quebec

Canada

The Journal of Gemmology 1982, Vol 18, N°2, p128

37.8

17.04

0.77

0.03

0.94

1.2

35.88

 

6.97

 

 

 

Grossular

reddish brown

Cocoktau, Altay Mts

China

Gems & Gemology 1993 winter, p276

39.05

20.33

0.1

0.3

0.5

0.16

36.65

0.01

0.01

 

3.12

0.07

Grossular

yellowish green

Cocoktau, Altay Mts

China

Gems & Gemology 1993 winter, p276

39.4

21.89

0.05

0.13

0.23

0.07

36.68

0.01

0.01

 

1.11

0.02

Grossular

green

Cocoktau, Altay Mts

China

Gems & Gemology 1993 winter, p276

39.03

22.65

0.05

0.14

0.02

0.02

37.04

 

 

 

0.63

 

Grossular

cat's eye

 

East Africa

The Journal of Gemmology 1995, Vol 24, N°8, p 574

38

21.8

0.85

1.52

17.5

 

20.6

 

 

 

 

 

Grossular

brown-green

Itrafo

Madagascar

Gems & Gemology Fall 2012, p183

39.47

21.14

0.1

0.27

0.12

0.4

36.49

0.01

 

0.19

1.85

 

Grossular

yellowish green

Itrafo

Madagascar

Gems & Gemology Fall 2012, p183

39.77

21.99

0.15

0.24

0.22

0.2

36.66

0.01

0.01

0.3

1.56

 

Grossular

green

Itrafo

Madagascar

Gems & Gemology Fall 2012, p183

39.6

21.58

0.13

0.18

0.22

0.23

36.65

0.01

0.02

0.48

1.29

 

Grossular

red

Sierra de la Cruces, Sierra Mojada, Coahuila

Mexico

Zeitschrift der Deutschen Gemmologischen Gesellschaft 61/1-2, 2012, p6

39.78

22

0.94

0.78

0.33

0.03

36.65

 

 

 

 

 

Grossular

orange-red

 

Somaliland

The Journal of Gemmology 2000, Vol27, N°3,p148

38.78

19.97

0.12

0.12

1.21

0.71

35.49

 

0.01

 

3.42

 

Hessonite - Grossular

yellowish-brown

Budhido, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 79

35.97

17.64

0.73

 

 

0.26

38.73

 

 

 

6.67

 

Hessonite - Grossular

yellowish-brown

Budhido, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 79

34.63

17.59

1.26

 

 

0.33

39.81

 

 

 

6.38

 

Hessonite - Grossular

light yellowish

Budhido, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 79

36.75

18.95

0.67

 

 

0.27

37.82

 

 

 

5.54

 

Hessonite - Grossular

yellowish-brown

Burubura, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 78

37.32

17.12

0.26

 

 

0.44

38.12

 

 

 

6.75

 

Hessonite - Grossular

yellowish-brown

Burubura, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 78

38.5

17.78

0.22

 

 

0.33

36.24

 

 

 

6.93

 

Hessonite - Grossular

brown

Burubura, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 78

37.14

17.2

0.8

 

 

0.51

36.15

 

 

 

8.2

 

Hessonite - Grossular

brown

Dahikbala, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 79

36.17

18.62

1.6

 

 

0.41

36.12

 

 

 

7.09

 

Hessonite - Grossular

yellowish-brown

Dahikbala, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 79

36.39

18.85

1.21

 

 

0.42

36.45

 

 

 

6.68

 

Hessonite - Grossular

yellowish-brown

Dahikbala, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 79

35.97

18.84

1.3

 

 

0.37

37.62

 

 

 

5.89

 

Hessonite - Grossular

yellowish-brown

Ghatpara, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 78

37.48

18.46

0.66

 

 

0.15

37.1

 

 

 

6.15

 

Hessonite - Grossular

light yellowish

Ghatpara, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 78

38.15

20.43

0.37

 

 

 

39.59

 

 

 

1.1

 

Hessonite - Grossular

yellowish-brown

Ghatpara, Orissa

India

The Journal of Gemmology 1994, Vol 24, N°2, p 78

38.31

19.55

0.44

 

 

 

37.53

 

 

 

4.17

 

Hessonite - Grossular

yellowish-orange

 

Sri Lanka

The Journal of Gemmology 2007,30,5/6,307-319

38.48

20.64

0.09

0.01

 

0.02

36.96

 

 

 

4.18

 

Hessonite - Grossular

yellowish-orange

 

Sri Lanka

The Journal of Gemmology 2007,30,5/6,307-319

39.13

18.34

0.32

0.06

 

0.2

37.8

0.01

0.01

 

4.96

0.01

Hessonite - Grossular

orange

Tunduru-Songea region

Tanzania

Gemmologie, Zeitschrift der deutschen gemmologischen Gesellschaft, 1997, Mar, p40

38.98

20.99

 

 

1.07

 

35.85

 

 

 

2.39

 

Hessonite - Grossular

orange

Jeffrey Mine, Quebec

Canada

The Journal of Gemmology 1982, Vol 18, N°2, p128

39.29

22.17

0.57

 

1.85

0.05

36.84

 

0.01

 

 

 

tsavorite - grossular

green

 

East africa

Gems & Gemology 1974 Summer p297

41.6

20.7

1.1

0.5

0.1

0.3

34

 

0.3

1.6

 

 

tsavorite - grossular

green

 

East africa

Gems & Gemology 1974 Summer p297

43.1

22.5

0.6

0.6

0.2

0.4

34.6

 

0.3

0.2

 

 

tsavorite - grossular

green

 

East africa

Gems & Gemology 1974 Summer p297

42

22.9

0.4

0.5

0.2

0.5

35.2

 

0.04

0.1

 

 

tsavorite - grossular

green

 

East africa

Gems & Gemology 1974 Summer p297

41.8

20.8

0.7

0.4

0.2

0.4

34.2

 

0.2

1.5

 

 

tsavorite - grossular

green

Lualeni

Kenya

The Journal of Gemmology, 1997, Vol 25, N°6, p392

38.7

20.9

0.75

0.5

0.05

0.25

35.1

 

0.19

3.3

 

 

tsavorite - grossular

green

Lualeni

Kenya

The Journal of Gemmology, 1997, Vol 25, N°6, p392

39.26

21.28

0.74

0.5

 

0.43

36.12

 

 

1.71

0.1

 

tsavorite - grossular

green

 

Madagascar

Gemmologie, Zeitschrift der deutschen gemmologischen Gesellschaft, 1999, Jul p111

38.82

20.2

1.12

0.4

 

0.4

35.62

 

 

2.52

0.06

 

tsavorite - grossular

green

 

Madagascar

Gemmologie, Zeitschrift der deutschen gemmologischen Gesellschaft, 1999, Jul p111

39.58

20.64

1.08

0.4

 

0.36

35.94

 

 

2.24

0.06

 

tsavorite - grossular

green

Gogogogo

Madagascar

The Journal of Gemmology, 1997, Vol 25, N°6, p392

39.15

20.13

0.72

0.5

0.07

0.39

36.37

 

0.3

2.5

 

 

tsavorite - grossular

intense green (tsavorite)

Gogogogo

Madagascar

Gems & Gemology Fall 2012, p183

39.57

21.17

0.58

0.55

0.22

0.42

35.82

 

0.29

1.05

0.08

 

tsavorite - grossular

intense green

Itrafo

Madagascar

Gems & Gemology Fall 2012, p183

39.76

21.45

0.13

0.08

0.11

0.29

37.01

 

0.01

0.83

1.26

 

tsavorite - grossular

green

Swat

Pakistan

The Journal of Gemmology, 1997, Vol 25, N°6, p392

38.17

18.51

0.3

0.1

 

0.44

36.62

 

 

4.52

0.05

 

tsavorite - grossular

green

 

Tanzania

The Journal of Gemmology 2007,30,5/6,307-319

39.43

19.61

0.75

0.58

 

0.39

36.8

0.02

0.34

1.14

0.02

0.01

tsavorite - grossular

green

 

Tanzania

The Journal of Gemmology 2007,30,5/6,307-319

39.13

20.39

1.19

0.5

0.01

0.43

35.24

 

0.18

1.48

 

 

tsavorite - grossular

intense green (tsavorite)

 

Tanzania

Gems & Gemology Fall 2012, p183

39.59

20.53

1.02

0.52

 

0.39

35.97

0.01

0.24

1.24

0.04

 

tsavorite - grossular

green

Karo pit, Merelani Hills

Tanzania

Gems & Gemology 1990 summer p 147

40.33

22.49

0.27

0.02

 

0.28

37.16

 

0.05

0.19

0.26

 

tsavorite - grossular

green

Komolo

Tanzania

The Journal of Gemmology, 1997, Vol 25, N°6, p392

42.5

20.5

0.5

0.3

0.1

0.3

34.5

 

0.12

1.2