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

Beryl

1,564

1,575

0,007

0,008

2,685

2,688

golden yellow, pale yellow, pale yellow-green, pale green, medium green, pale blue

Luumaki, Finland

1,564

1,568

1,572

1,575

inert

inert

Gems & Gemology 1993 spring, p30-37

Beryl

1,568

1,575

0,005

0,006

2,63

2,69

light bluish green and greenish blue

Kaduna State, Nigeria

1,568

1,570

1,574

1,575

line at 427 nm, weak lines near 700 nm

inert

inert

Gems & Gemology 2012 Fall, p215-217

Beryl

1,568

1,582

0,005

0,006

2,699

2,699

two-coloured: colourless and yellow

Pulbani mining area, Orissa, India

3.97ct, 4.13ct

1,568

1,578

1,572

1,582

540nm

inert

inert

The Journal of Gemmology 1987 Vol 20, N°6, p352-355

Beryl

1,569

1,58

0,008

0,008

2,7

2,7

brownish-yellow, golden beryl

Afghanistan

1,569

1,572

1,576

1,580

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Sep, p3

Beryl

1,57

1,58

2,69

2,71

yellow-green to brownish yellowish green

India

cat's eye

absorption at 547nm

inert

inert

Gems & Gemology 2009 Winter, p297

Beryl

1,57

1,58

2,69

2,71

yellow-green to brownish yellowish green

Jaipur, India

cabochon 46.76-283.62 ct, cat's-eye caused by needle-like growth tubes

absorption band of unknown origin at ~547 nm

inert

inert

Gems & Gemology 2009 Winter, p297

Beryl

1,57

1,576

0,006

0,006

2,68

2,68

yellowish green

Lüumäki, Finland

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1994 Jun, p1

Beryl

1,57

1,577

0,007

0,007

2,7

2,7

yellowish green

Sabinopolis, Minas Gerais, Brazil

36.38ct

inert

inert

GIA Gem Database  33005

Beryl

1,57

1,578

0,008

0,008

2,7

2,7

bicoloured : blue-yellow

Tajikistan

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2002 Mar p9-10

Beryl

1,57

1,58

0,01

0,01

2,7

2,7

greyish, aventurescent

flat liquid films perpendicular to the optic axis

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2019 68/3-4, p13

Beryl

1,571

1,578

0,007

0,007

2,7

2,7

yellowish green

Brumado, Bahia State, Brazil

23.35ct

inert

inert

GIA Gem Database  33004

Beryl

1,575

1,583

light green

Bucha, Pakistan

chelsea: light brownish red

The Journal of Gemmology 1985 Jan, p404

Beryl

1,576

1,581

0,005

0,005

2,71

2,71

bluish green

Ratnapura, Sabaragamuwa, Sri Lanka

10.27ct

inert

inert

GIA Gem Database  34815

Beryl

1,577

1,581

0,004

0,004

2,85

2,85

light yellowish green

Mwami, Karoi, Zimbabwe

13.82ct

no features

inert

inert

GIA Gem Database  35253

Beryl

1,579

1,585

0,006

0,006

2,8

2,8

greenish yellow

Araçuai, Minas Gerais, Brazil

7.62ct

broad absorption below 420nm

inert

inert

GIA Gem Database  33052

Beryl

1,58

1,587

0,007

0,007

2,72

2,72

brownish orange

India

4.47ct, semitransparent to translucent

general absorption to 450 nm and a cutoff at 670 nm

inert

inert

Gems & Gemology 2008 Summer, p167-168

Beryl

1,58

1,586

0,006

0,006

2,73

2,73

greyish green

Embu, Kenya

no features

inert

inert

GIA Gem Database  34348

Beryl

1,582

1,59

0,008

0,008

2,71

2,71

green-blue

Mozambique

maxixe-type beryl, 54.21ct

Gems & Gemology 2018 Summer, p206

Beryl

1,588

1,595

0,007

0,007

dyed green

weak chalky yellow

very weak chalky yellow

Gems & Gemology 2016 Winter, p393-401

Beryl

1,59

1,598

0,008

0,008

2,81

2,81

smoky grey

71.57ct

no features

inert

inert

Gems & Gemology 2009 Fall, p216-217

Beryl

bicoloured : green-light green and green-brown

Erongo Mts, Namibia

Gems & Gemology 2006 winter, p 272

Beryl-Aquamarine

1,561

1,57

0,007

0,009

2,68

2,69

light greenish blue

Klein Spitzkoppe, Namibië

chelsea: yellow-green

1,561

1,562

1,569

1,570

faint line at 430

Gems & Gemology 1998 summer, p114-125

Beryl-Aquamarine

1,562

1,571

0,005

0,005

2,68

2,7

almost colourless to a medium to deep sky-blue colour

Mt Surprise, Queensland, Australia

RI and density increase with increasing depth of blue colour

1,562

1,566

1,567

1,571

inert

inert

The Journal of Gemmology 1985 Vol 19, No 8, p707

Beryl-Aquamarine

1,565

1,57

0,005

0,005

Irfersgrün, Sachsen, Germany

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1993 Sep, p123-127

Beryl-Aquamarine

1,565

1,572

0,006

0,006

2,66

2,67

pastel-coloured greenish blue

Padre Paraiso, Minas Gerais, Brazil

1,565

1,566

1,571

1,572

Gems & Gemology 2006 spring p87

Beryl-Aquamarine

1,565

1,572

0,006

0,006

2,66

2,67

pastel-coloured greenish blue

Padre Paraiso, Minas Gerais, Brazil

can exceed 100cts

1,565

1,566

1,571

1,572

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2005 Mar, p47-51

Beryl-Aquamarine

1,568

1,575

0,005

0,005

2,68

2,71

light blue

Kaduna State, Nigeria

1,568

1,570

1,573

1,575

line at 427 nm

inert

inert

Gems & Gemology 2012 Fall, p215-217

Beryl-Aquamarine

1,569

1,579

0,03

0,06

2,66

2,7

light to medium blue

Thuong Xuan District, Thanh Hoa Province, Vietnam

1,569

1,573

1,572

1,579

inert

inert

Gems & Gemology 2011 Spring, p42-48

Beryl-Aquamarine

1,57

1,57

2,69

2,73

bluish green

IR : 3051, 3035, 2962, 2927 and 2873 cm-1

fractures chalky white

Gems & Gemology 2009 Fall p197-199

Beryl-Aquamarine

1,57

1,575

0,005

0,005

2,7

2,74

Orissa, India

inert

inert

The Journal of the Gemmological Association of Hongkong 1996 Vol XIX, p50-52

Beryl-Aquamarine

1,57

1,575

0,005

0,005

2,71

2,71

blue, greenish blue

Sakangyi, Mogok, Birma

inert

inert

The Australian Gemmologist 2005 22, p303-309

Beryl-Aquamarine

1,57

1,579

0,007

0,008

2,68

2,69

medium saturated blue

Sao José de Safira, Governador Valadares, Minas Gerais, Brazil

12 to 26 ct

1,578

1,579

1,570

1,572

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2005 Sep, p69-70

Beryl-Aquamarine

1,57

1,575

0,005

0,005

2,53

2,53

pale blue to blue

Deo Darrah, Khash, and Kuran Wa Munjan districts in Badakhshan Province, Afghanistan

"vorobyevite"

inert

inert

Gems & Gemology 2018 Fall, p319

Beryl-Aquamarine

1,57

1,582

0,012

0,012

2,66

2,66

greenish blue to medium blue

Ethiopia

inert

inert

The Journal of Gemmology 2019 36 (6), p 497-499

Beryl-Aquamarine

1,57

1,582

0,012

0,012

2,66

2,66

greenish blue to medium blue

Ethiopia

inert

inert

The Journal of Gemmology 2019 36 (6), p 497-499

Beryl-Aquamarine

1,571

1,578

0,004

0,005

2,68

2,8

blue, pale blue

Gur-Salak pegmatite, Konar Province, Afghanistan

1,571

1,573

1,575

1,578

inert

inert

The Journal of Gemmology 2008 Vol 31/ No1-2/p31-39

Beryl-Aquamarine

1,571

1,579

0,008

0,008

2,68

2,73

Opanayake, Sri Lanka

weak Fe content

inert

inert

Revue de  Gemmologie A.F.G. 2007 N° 161 Sep

Beryl-Aquamarine

1,572

1,59

0,008

0,009

2,67

2,72

light to medium blue to greenish blue

Masino-Bregaglia Massif, Italy

1,580

1,590

1,572

1,579

UV-VIS-NIR: 370,426,600,820nm ; IR 3699, 3660,3597cm-1

inert

inert

Gems & Gemology 2009 Fall, p204-207

Beryl-Aquamarine

1,572

1,589

0,009

0,009

2,7

2,73

Mozambique

1,572

1,580

1,582

1,589

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1992 Sep, p107-110

Beryl-Aquamarine

1,572

1,579

0,007

0,007

2,69

2,69

Somaliland

0.18ct

The Journal of Gemmology 2000 Vol27, N°3, p146

Beryl-Aquamarine

1,572

1,581

0,009

0,009

2,71

2,71

light blue

Manakana, Madagascar

3,90ct, black dendritic inclusions

The Journal of Gemmology 2022 38(1), p6-7

Beryl-Aquamarine

1,573

1,582

0,006

0,007

2,69

2,73

medium blue to slightly greenish blue

Ambatofotsikely, Madagascar

inclusions : reddish brown hematite and black ilmenite

1,573

1,575

1,580

1,582

weak absorption at 456 nm

Gems & Gemology 2012 Fall, p205-208

Beryl-Aquamarine

1,573

1,581

0,008

0,008

2,71

2,71

bluish green

Pakistan

cabochon 97.43ct, monazite-Ce inclusions

The Journal of Gemmology 2016 35 (3), p 188-189

Beryl-Aquamarine

1,574

1,58

0,006

0,006

2,77

2,77

greenish blue

Itongafeno, Mahaiza, Antananarivo Province, Madagascar

9.60ct

inert

inert

GIA Gem Database  34398

Beryl-Aquamarine

1,574

1,58

0,006

0,006

2,72

2,75

Rajasthan, India

inert

inert

The Journal of the Gemmological Association of Hongkong 1996 Vol XIX, p50-52

Beryl-Aquamarine

1,575

1,582

0,007

0,007

2,7

2,71

light blue

Mexico

1,575

1,580

1,582

1,587

inert

inert

Gems & Gemology 2016 Fall, p 317-318

Beryl-Aquamarine

1,577

1,583

0,005

0,005

2,7

2,7

pale greenish blue to light blue, and even more intense blue

Akkarella, Sri Lanka

typically 1 to 3 ct, but larger up to 20ct exist

1,577

1,578

1,582

1,583

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2008 57/1-2, p23-27

Beryl-Aquamarine

1,577

1,587

0,007

0,007

2,71

2,71

Akkerella estate, Ratnapura, Sri Lanka

1,577

1,580

1,584

1,587

inert

inert

Gems & Gemology 2006 spring p63

Beryl-Aquamarine

1,577

1,585

0,006

0,008

2,72

2,74

intense blue

Tatu, Itabira, Minas Gerais, Brazil

1,577

1,579

1,583

1,585

Gems & Gemology 2006 spring p87

Beryl-Aquamarine

1,577

1,585

0,006

0,008

2,72

2,74

intensive blue

Tatu, Minas Gerais, Brazil

between 1 and 10 carats

1,577

1,579

1,583

1,585

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2005 Mar, p47-51

Beryl-Aquamarine

1,579

1,586

0,005

0,006

Hyakule, Nepal

1,579

1,581

1,585

1,586

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1993 Sep, p73

Beryl-Aquamarine

1,579

1,583

0,003

0,004

Taplejung, Nepal

1,579

1,580

1,583

1,583

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1993 Sep, p73

Beryl-Aquamarine

1,58

1,586

0,006

0,006

2,74

2,77

sky blue to deep blue

Andhra Pradesh, India

inert

inert

The Journal of the Gemmological Association of Hongkong 1996 Vol XIX, p50-52

Beryl-Aquamarine

1,58

1,59

0,008

0,008

2,74

2,75

intense blue

Jacutinga, Minas Gerais, Brazil

1,580

1,582

1,588

1,590

Gems & Gemology 2006 spring p87

Beryl-Aquamarine

1,58

1,59

0,008

0,008

2,74

2,75

intensive blue

Jacutinga, Minas Gerais, Brazil

hardly exceed 3 cts

1,580

1,582

1,588

1,590

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2005 Mar, p47-51

Beryl-Aquamarine

1,58

1,578

0,005

0,006

Mangsima, Nepal

1,580

1,584

1,575

1,578

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1993 Sep, p73

Beryl-Aquamarine

1,58

1,588

0,008

0,008

2,72

2,72

blue

Mocuba, Zambezia Province, Mozambique

12.58ct

inert

inert

GIA Gem Database  34496

Beryl-Aquamarine

1,58

1,583

0,003

0,003

Phakuwa, Nepal

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1993 Sep, p73

Beryl-Aquamarine

1,58

1,587

0,007

0,007

2,77

2,77

greenish blue

Santa Maria do Suaçui, Minas Gerais, Brazil

17.96ct

inert

inert

GIA Gem Database  34268

Beryl-Aquamarine

1,58

1,586

0,006

0,006

2,47

2,77

sky blue to bluish green to deep sky blue

Tamil Nadu, India

inert

inert

The Journal of the Gemmological Association of Hongkong 1996 Vol XIX, p50-52

Beryl-Aquamarine

1,582

1,589

0,007

0,007

2,76

2,76

Nigeria

0.25 to 3ct

Fe, unusual growth zoning with wavy and planar features (like hydrothermal synthetics)

inert

inert

Gems & Gemology 2005 Spring , 56

Beryl-Aquamarine

1,582

1,59

0,008

0,008

2,73

2,73

greenish blue

St. Anne's Mine, Mwami, Karoi District, Mashonaland, Zimbabwe

7.78ct

inert

inert

GIA Gem Database  35272

Beryl-Aquamarine

1,582

1,59

0,007

0,008

2,73

2,778

medium blue, medium dark blue

Tongafeno, Madagascar

1,582

1,583

1,590

1,590

inert

inert

The Journal of Gemmology 1989 Vol21, N°7, p423-430

Beryl-Aquamarine

1,582

1,59

0,008

0,008

2,71

2,73

blue

Nasawara State, Nigeria

new find in 2019

Gems & Gemology 2019 Fall, p 437

Beryl-Aquamarine

1,592

1,601

0,008

0,009

2,8

2,87

dark greyish blue

Yukon, Canada

semi-transparent, translucent

inert

inert

Gems & Gemology 2008 fall, p216

Beryl-Emerald

1,558

1,57

0,007

0,008

2,6

2,7

pale to intens bluisg green

Delbegetey deposit, Shyghys Qazaqstan Oblysy , Kazakhstan

largest recovered X : 1.5cm

1,558

1,562

1,566

1,570

inert

weak red

Gems & Gemology 2007 fall, p285

Beryl-Emerald

1,56

1,576

0,005

0,007

2,64

2,68

Kaduna , Nigeria

1,560

1,569

1,570

1,576

Revue de Gemmologie A.F.G. 1992 n°113, p2-4

Beryl-Emerald

1,56

1,574

0,005

0,006

2,64

2,68

Kaduna, Nigeria

1,560

1,569

1,566

1,574

The Journal of Gemmology 1996 Vol 25, N°2 p117-141

Beryl-Emerald

1,566

1,588

0,005

0,008

2,682

2,727

Chivor, Colombia

chelsea : strong red

1,566

1,581

1,572

1,588

generally inert

inert to medium red

L'émeraude, Connaissances actuels et prospectives , AFG, 1998 1998 p230

Beryl-Emerald

1,566

1,575

0,005

0,005

2,67

2,68

Emmaville, New South Wales, Australia

1,566

1,570

1,571

1,575

The Australian Gemmologist 1991 Vol 17/12 p488-497

Beryl-Emerald

1,566

1,588

0,005

0,008

2,682

2,727

Muzo, Colombia

chelsea: strong red

1,566

1,581

1,572

1,588

inert

inert to medium red

L'émeraude, Connaissances actuels et prospectives , AFG, 1998 1998 p230

Beryl-Emerald

1,567

1,577

0,005

0,007

Poona, Australia

1,567

1,571

1,573

1,577

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1991 Apr, p49

Beryl-Emerald

1,568

1,577

0,005

0,006

2,69

2,69

Chivor, Colombia

1,568

1,571

1,573

1,577

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,568

1,575

0,005

0,007

2,62

2,65

emerald green

Kaduna State, Nigeria

1,568

1,569

1,573

1,575

line at 427 nm, weak lines near 700 nm

inert

inert

Gems & Gemology 2012 Fall, p215-217

Beryl-Emerald

1,568

1,574

0,006

0,006

2,76

2,76

Somaliland

0.15ct

The Journal of Gemmology 2000 Vol27, N°3, p144-45

Beryl-Emerald

1,568

1,575

0,007

0,007

2,69

2,69

green

Sumbawanga, Tanzania

2.29 ct

lines at 700nm

weak red

faint red

Gems & Gemology 2012 Fall, p220-221

Beryl-Emerald

1,569

1,576

0,007

0,007

2,704

2,704

Burbar, Colombia

Gems & Gemology 1982 Fall p130

Beryl-Emerald

1,569

1,58

0,006

0,007

2,68

2,71

Coscuez, Colombia

1,569

1,574

1,576

1,580

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,569

1,576

0,005

0,006

2,65

2,67

Jos, Nigeria

1,569

1,570

1,574

1,576

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,569

1,576

0,005

0,006

2,65

2,67

Nigeria

1,569

1,570

1,574

1,576

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1991 Dec, p181-187

Beryl-Emerald

1,569

1,576

0,007

0,007

2,704

2,704

Pena Blanca, Colombia

1,569

1,569

1,576

1,576

L'émeraude, Connaissances actuels et prospectives , AFG, 1998 1998 p230

Beryl-Emerald

1,57

1,578

0,008

0,008

2,68

2,68

faceted cat's-eye, 3.19ct, chatoyance caused by white fibres

Cr-lines

inert

inert

Gems & Gemology 1997 Fall, p214

Beryl-Emerald

1,57

1,579

0,005

0,005

2,69

2,69

Chivor mine, Boyaca Department, Colombia

1,570

1,571

1,577

1,579

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Beryl-Emerald

1,57

1,577

0,006

0,007

2,65

2,7

saturated green

Chivor region, Colombia

1.02 and 3.81ct

inert to very weak red fluorescence

Gems & Gemology 2002 Winter, p351

Beryl-Emerald

1,57

1,579

0,005

0,006

2,688

2,688

Chivor, Colombia

12 stones

Gems & Gemology 1982 Fall p130

Beryl-Emerald

1,57

1,575

0,005

0,005

2,68

2,68

emerald green

Emerald Mine, Emmaville, New South Wales, Australia

broad band at 610nm, general absorption < 454nm

inert

inert

The Journal of Gemmology 1984 Vol XIX, N°4, p320-342

Beryl-Emerald

1,57

1,589

0,006

0,008

0

0

Fazenda Boa Esperança, Taua, Ceara, Brazil

1,570

1,582

1,577

1,589

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1988 36, Nr 3/4 p133-147

Beryl-Emerald

1,57

1,577

0,007

0,007

2,72

2,72

bluish green

Gachala, Boyaca Province, Colombia

3.51ct

inert

inert

GIA Gem Database  33872

Beryl-Emerald

1,57

1,576

0,006

0,006

2,7

2,7

Gachala, Chivor, Boyaca Department, Colombia

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Beryl-Emerald

1,57

1,576

0,006

0,006

2,7

2,7

Gachala, Colombia

1,570

1,570

1,576

1,576

red

red

L'émeraude, Connaissances actuels et prospectives , AFG, 1998 1998 p230

Beryl-Emerald

1,57

1,576

0,006

0,006

2,7

2,7

Gachala, Colombia

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,57

1,584

0,005

0,006

2,7

2,71

Muzo mine, Muzo, Boyaca Department, Colombia

1,570

1,578

1,580

1,584

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Beryl-Emerald

1,57

1,58

0,005

0,006

2,698

2,698

Muzo, Colombia

11 stones

Gems & Gemology 1982 Fall p130

Beryl-Emerald

1,57

1,582

0,006

0,006

2,68

2,74

Novello Claims, Zimbabwe

1,570

1,576

1,576

1,582

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,57

1,589

0,006

0,007

2,7

2,73

Taua, Ceara, Brazil

1,570

1,582

1,577

1,589

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,571

1,577

0,006

0,006

2,69

2,69

Chivor, Colombia

Gems, R Webster, 5th edition 1994 

Beryl-Emerald

1,571

1,582

0,007

0,008

2,68

2,71

Poona, Australia

1,571

1,574

1,578

1,582

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,572

1,578

0,005

0,007

2,693

2,693

Poona, Australia

3 stones

Gems & Gemology 1982 Fall p130

Beryl-Emerald

1,572

1,578

0,005

0,007

2,68

2,71

Poona, West Australia,  Australia

1,572

1,573

1,577

1,578

The Australian Gemmologist 1991 Vol 17/12 p488-497

Beryl-Emerald

1,573

1,582

0,005

0,006

2,7

2,72

Bom Jesus dos Meiras, Bahia, Brazil

1,573

1,576

1,578

1,582

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,573

1,579

0,005

0,006

2,682

2,682

Brumado, Bahia, Brazil

3 stones

Gems & Gemology 1982 Fall p130

Beryl-Emerald

1,573

1,583

0,007

0,008

2,68

2,71

China

1,573

1,575

1,580

1,583

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1997 Jun, p109

Beryl-Emerald

1,573

1,585

0,007

0,008

2,75

2,76

Egypt

1,573

1,577

1,580

1,585

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,574

1,584

0,006

0,007

2,68

2,71

Coscuez, Colombia

chelsea  pink to red

1,574

1,578

1,580

1,584

inert

inert or slightly pink, orange or red

Gems & Gemology 1986 Summer, p67-79

Beryl-Emerald

1,574

1,597

0,005

0,007

2,7

2,77

Habachtal, Austria

1,574

1,590

1,582

1,597

Gems & Gemology 2005 Summer p116-148

Beryl-Emerald

1,574

1,597

0,005

0,007

2,73

2,74

Habachtal, Austria

chesea : pink to red

1,574

1,590

1,582

1,597

L'émeraude, Connaissances actuels et prospectives , AFG, 1998 1998 p230

Beryl-Emerald

1,574

1,597

0,005

0,007

2,7

2,77

Habachtal, Austria

1,574

1,590

1,579

1,597

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1995 Dez, p65

Beryl-Emerald

1,574

1,59

0,004

0,009

2,72

2,74

Itabira district, Brazil

1,574

1,583

1,580

1,590