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

anorthoclase

1.531

1.538

0.007

0.007

2.66

2.66

black

Antarctica

2.29 ct and 1.61ct

The Journal of Gemmology 2019 Vol 36, N°5, p402

Albite

1.531

1.537

0.006

0.006

2.64

2.64

light greyish green-blue

Kenya

6.30ct

no features

inert

inert

GIA Gem Database  33116

Albite

1.534

1.54

0.006

0.006

2.68

2.68

light greyish green-blue

Embu, Kenya

10.48ct

no features

inert

inert

GIA Gem Database  33116

Albite

1.535

1.542

0.007

0.007

2.65

2.65

colourless

near Teofilo Otoni, Minas Gerais, Brazil

2.50ct

moderate reddish

inert

The Journal of Gemmology 2019 Vol 36, N°7,p582

Albite

2.71

2.71

greenish blue

Kioo Hill, Eastern Province, Kenya

8.87 ct; cat's eye

inert

inert

GIA Gem Database  33117

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

Referte

Albite

1.524

1.548

0.01

0.01

2.61

2.61

1.524

1.540

1.536

1.548

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Albite

1.525

1.542

0.011

0.011

2.6

2.6

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Albite

1.525

1.541

0.011

0.011

2.57

2.69

1.525

1.531

1.536

1.541

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

Albite

1.525

1.542

0.07

0.011

2.57

2.69

1.525

1.532

1.528

1.536

1.536

1.542

http://www.geminterest.com 

Albite

1.525

1.543

0.008

0.011

2.57

2.68

Gemmo.eu 2020

Albite

1.526

1.542

0.009

0.011

2.57

2.67

1.526

1.533

1.531

1.536

1.538

1.542

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

Albite

1.527

1.538

0.011

0.011

2.57

2.69

1.527

1.527

1.531

1.531

1.538

1.538

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Albite

1.527

1.538

0.011

0.011

2.57

2.69

http://www.gemmology.be 

Albite

1.527

1.59

0.007

0.01

2.57

2.77

Gemology Tools Professional 2010

Albite

1.528

1.542

0.009

0.01

2.61

2.63

1.528

1.533

1.532

1.537

1.538

1.542

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

Albite

1.529

1.542

0.009

0.009

2.61

2.62

1.529

1.533

1.310

1.536

1.538

1.542

Gemmological Tables, Ulrich Henn, 2004 

Albite

1.54

1.54

0.011

0.011

2.6

2.63

John Sinkakas, Gemstone and mineral data book,1972