Gemsdat
 

                Home            Gemstones

 

      

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

Shomiokite-Y

1.53

1.539

0.009

0.009

2.64

2.64

pink

Lovozero, Kola, Russia

0.61 ct

1.530

1.530

1.533

1.533

1.539

1.539

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1999 Sep, p141-146

 

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

Shomiokite-Y

1.528

1.531

0.003

0.003

2.52

2.64

1.528

1.528

1.529

1.529

1.531

1.531

http://www.geminterest.com 

Shomiokite-Y

1.528

1.539

0.003

0.009

2.52

2.64

1.528

1.530

 

 

1.531

1.539

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Shomiokite-Y

1.528

1.539

0.003

0.009

2.52

2.64

 

 

 

 

 

 

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

Shomiokite-Y

1.53

1.539

0.009

0.009

2.64

2.64

1.530

1.530

1.533

1.533

1.539

1.539

Gemmological Tables, Ulrich Henn, 2004 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

STONE

LOCALITIES

REFERENCE

Shomiokiet-Y

 

Lovozero Massif

Kola

Rusland

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1999 Sep, p141-146

 

CHEMICAL DATA (%)

Stone

Colour

Locality

Reference

CaO

Na2O

La2O3

Ce2O3

PrO2

Nd2O3

Sm2O3

Gd2O3

Tb2O3

Dy2O3

Er2O3

Yb2O3

Y2O3

CO2

Shomiokite-Y

 

Mont Saint-Hilaire

Canada

Gemmologie, Zeitschrift der deutschen gemmologischen Gesellschaft, 1999, Sep p143

 

23.25

0.2

1.81

0.52

2.79

0.95

1.05

0.36

2.81

2.13

1.55

19.05

33.36

Shomiokite-Y

 

Lovozero, Kola

Russia

Gemmologie, Zeitschrift der deutschen gemmologischen Gesellschaft, 1999, Sep p143

0.1

21.93

 

0.09

 

 

 

1.8

0.46

5.03

1.24

 

21.52

32.1