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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

bromellite

1.718

1.732

0.014

0.014

3.01

3.03

colourless

 

0.68, 1.92, and 2.80 ct

 

 

 

 

 

very weak yellow

inert

Gems & Gemology 2002 Fall, p249

bromellite synthetic

1.719

1.735

0.015

0.015

3.00

3.00

colourless

 

 

1.719

1.720

1.735

1.735

 

 

faint orange

Gems & Gemology 1964 Spring, p 150-151

bromellite synthetic

1.72

1.735

0.015

0.015

3

3.02

 

 

 

 

 

 

 

 

 

faint orange

The Journal of Gemmology 1970 N°4,p115

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

bromellite synthetic

1.705

1.719

0.014

0.03

3

3.02

1.735

1.735

1.705

1.719

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

bromellite

1.718

1.732

0.014

0.014

3.01

3.03

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

bromellite

1.719

1.735

0.013

0.015

3

3.05

 

 

 

 

Gemmo.eu 2013

bromellite

1.72

1.735

0.015

0.015

3

3.02

 

 

 

 

Gems, R Webster, 5th edition 1994 

bromellite synthetic

 

 

 

 

3

3.02

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

 

CAUSE OF COLOUR