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INVESTIGATIONS

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

Mellite

1.511

1.54

0.029

0.029

1.64

1.64

yellowish

Hungary

0.08ct

 

 

 

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2013 62/1-2, Jun, p35

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Mellite

1.508

1.542

0.027

0.033

1.55

1.65

 

 

 

 

Gemmo.eu 2013

Mellite

1.509

1.541

0.028

0.032

1.58

1.64

1.509

1.511

1.539

1.541

http://www.geminterest.com 

Mellite

1.509

1.539

0.03

0.03

1.58

1.6

1.509

1.511

1.539

1.539

Gemmological Tables, Ulrich Henn, 2004 

Mellite

1.509

1.541

0.028

0.032

1.58

1.64

 

 

 

 

http://www.gemmology.be 

Mellite

1.509

1.541

0.028

0.032

1.58

1.64

1.509

1.511

1.539

1.541

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Mellite

1.509

1.541

0.032

0.032

1.6

1.6

 

 

 

 

Gems, R Webster, 5th edition 1994 

Mellite

1.509

1.541

0.028

0.032

1.58

1.64

 

 

 

 

Gemology Tools Professional 2010

Mellite

1.539

1.511

0.028

0.032

1.57

1.65

1.539

1.541

1.509

1.511

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

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)