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

Jeremejevite

1.639

1.649

0.009

0.009

3.29

3.32

intense blue, colourless, pale yellow, violet

Erongo Mts, Namibia

production stopped in 2001

1.639

1.640

1.648

1.649

inert

inert

Gems & Gemology 2002 fall p 264-265

Jeremejevite

1.639

1.648

0.009

0.009

3.3

3.3

Namibia

1.51ct

Gems & Gemology 1973 Summer,p184-185

Jeremejevite

1.64

1.651

0.009

0.009

3.28

3.31

yellow, light blue

Cape Cross, Namibia and Tajikistan

anomalous optical properties : uniaxial (-) or biaxial (-) with small V

1.640

1.642

1.649

1.651

Gems & Gemology 2001 Fall p 206-211

Jeremejevite

1.64

1.653

0.013

0.013

3.28

3.31

colourless, yellow

Mogok, Myanmar

transparent

1.653

1.653

1.640

1.640

inert

inert

The Australian Gemmologist 2006 22/9 Jan-Mar

Jeremejevite

1.64

1.649

0.009

0.009

3.29

3.29

colourless

Sri Lanka

none

inert

inert

Gems & Gemology 2006 summer, p175-176

Jeremejevite

1.64

1.647

0.007

0.007

3.33

3.33

light greyish violetish blue

Namibia

2.60ct

no features

inert

inert

GIA Gem Database  34702

Jeremejevite

1.641

1.65

0.009

0.009

3.33

3.33

colourless

Zeitschrift der Deutschen Gemmologischen Gesellschaft 1986 Jg 35, Nr 1-2, p72

Jeremejevite

1.643

1.65

0.007

0.007

3.29

3.29

light yellowish, orange

Myanmar

none

weak yellow

inert

Gems & Gemology 2006 summer, p175-176

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Jeremejevite

1.636

1.655

0.006

0.014

3.22

3.32

Gemmo.eu 2019

Jeremejevite

1.637

1.653

0.007

0.013

3.28

3.31

1.637

1.644

1.644

1.653

http://www.geminterest.com 

Jeremejevite

1.637

1.653

0.007

0.013

3.28

3.31

1.637

1.644

1.644

1.653

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

Jeremejevite

1.637

1.653

0.007

0.013

3.28

3.31

1.637

1.644

1.644

1.653

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Jeremejevite

1.637

1.653

0.007

0.013

3.28

3.31

1.637

1.644

1.644

1.653

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

Jeremejevite

1.637

1.653

0.007

0.013

3.28

3.31

Gemology Tools Professional 2010

Jeremejevite

1.637

1.644

0.007

0.013

3.28

3.29

1.637

1.637

1.644

1.647

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

Jeremejevite

1.638

1.65

0.007

0.009

3.3

3.33

1.638

1.639

1.647

1.650

Gemmological Tables, Ulrich Henn, 2004 

Jeremejevite

1.639

1.65

0.008

0.009

3.3

3.33

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Jeremejevite

1.639

1.648

0.009

0.009

329

3.31

Gems, R Webster, 5th edition 1994 

Stone

Colour

Cause of colour

Reference

Jeremejevite

blue

Fe²+ - Fe³+ intervalence charge transfer

http://minerals.caltech.edu

Inclusion

Stone

Reference

feldspar

Jeremejevite

Gems & Gemology Fall 2001

STONE

LOCALITIES

REFERENCE

Jeremejeviet

Tajikistan

Gems & Gemology 2001 Fall p206-211