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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

Aragonite

1.5

1.65

 

 

2.84

2.84

white

 

translucent carved pendant,

 

 

 

 

 

 

 

moderate light yellow

moderate yellowish white

Gems & Gemology 1996 Fall, p204

Aragonite

1.52

1.668

0.148

0.148

2.72

2.72

yellowish orange

Czech Republic

33.52ct

 

 

 

 

 

 

 

moderate orange

strong yellowish orange

GIA Gem Database  35308

Aragonite

1.52

1.66

0.14

0.14

2.75

2.75

variegated greenish blue and white

 

tablet, 9.36ct, larimar imitation, semi-translucent

 

 

 

 

 

 

no features

inert

inert

Gems & Gemology 1992 Winter, p269-270

Aragonite

1.53

1.68

0.15

0.15

2.99

2.99

light orangy yellow

Czech Republic

8.07ct

 

 

 

 

 

 

 

moderate green

strong yellowish white

GIA Gem Database  35333

Aragonite

1.53

1.682

0.152

0.152

2.95

2.95

colourless

Czech Republic

2.35ct

 

 

 

 

 

 

 

white

white

ACAM Lab  N°927

Aragonite

1.535

1.687

0.152

0.152

2.94

2.94

yellowish

Czech Republic

 

 

 

 

 

 

 

 

bluish green

yellowish white

ACAM Lab  N°4734

Aragonite

1.6

1.65

 

 

2.75

2.75

white containing blue

 

spot RI, DR tending to large, dyed

 

 

 

 

 

 

no features

inert

faint blue-white

http://www.gaaj-zenhokyo.easystockhosting.com/ 2008 Jan

 

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

Aragonite

1.522

1.686

0.154

0.157

2.94

2.94

1.522

1.531

1.672

1.682

1.676

1.686

Gemmological Tables, Ulrich Henn, 2004 

Aragonite

1.528

1.692

0.145

0.155

2.92

3

 

 

 

 

 

 

Gemmo.eu 

Aragonite

1.529

1.686

0.155

0.156

2.93

2.95

 

 

 

 

 

 

http://www.gemmology.be 

Aragonite

1.529

1.686

0.155

0.156

2.93

2.95

1.529

1.530

1.681

1.682

1.685

1.686

http://www.geminterest.com 

Aragonite

1.53

1.69

0.155

0.155

2.94

2.94

 

 

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Aragonite

1.53

1.686

0.155

0.155

2.93

3

1.530

1.530

 

 

1.685

1.686

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

Aragonite

1.53

1.688

0.158

0.158

2.9

3

 

 

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Aragonite

1.53

1.685

0.155

0.155

2.93

3

1.530

1.530

1.681

1.681

1.685

1.685

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Aragonite

1.53

1.69

0.15

0.155

2.93

2.95

1.530

1.540

 

 

1.680

1.690

Gems, R Webster, 5th edition 1994 

Aragonite

1.53

1.685

0.155

0.155

2.93

2.95

1 530

1 530

1 681

1 681

1 685

1 685

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

Aragonite

1.53

1.685

0.155

0.155

2.93

3

 

 

 

 

 

 

Gemology Tools Professional 2010

Aragonite

1.53

1.69

0.15

0.15

2.93

2.94

 

 

 

 

 

 

Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification (2006),  873pp 

Aragonite

 

 

 

 

2.94

2.94

 

 

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Aragonite

Magrath

Lethbridge

Alberta

Canada

Michael O'Donoghue, Gems: Their Sources, Descriptions and Identification (2006),  873pp

Aragonite

Cicov Hill (Spitzberg), Horenec, Bilina (Bilin)

Usti Region

Bohemia (Böhmen; Boehmen)

Czech Republic

MinRec 2/2004