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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

Dolomite

1.51

1.68

0.17

0.17

2.94

2.94

colourless

 

7.88ct

 

 

 

 

 

inert

inert

GIA Gem Database  35391

Dolomite

1.51

1.68

0.17

0.17

2.87

2.87

colourless

 

1.18ct

 

 

 

 

 

 

 

ACAM lab  1073

Dolomite

1.6

1.6

 

 

2.63

2.63

orangy brown, cream

Cayman Islands

"Caymanite", opaque beads, spot RI

 

 

 

 

 

inert to orangy yellow

inert to orangy yellow

Gems & Gemology 1994 Fall, p193

Dolomite

 

 

 

 

 

 

light blue, transparent

Colombia

1.13ct

 

 

 

 

 

 

 

Gems & Gemology 2011 Winter, p317

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Dolomite

1.497

1.685

0.175

0.185

2.79

2.92

 

 

 

 

Gemmo.eu 

Dolomite

1.5

1.679

0.179

0.179

2.8

2.8

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Dolomite

1.5

1.703

0.179

0.185

2.8

2.95

1.500

1.520

1.679

1.703

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

Dolomite

1.5

1.703

0.179

0.185

2.85

2.93

 

 

 

 

http://www.gemmology.be 

Dolomite

1.5

1.703

0.179

0.185

2.85

2.93

1.500

1.520

1.679

1.703

http://www.geminterest.com 

Dolomite

1.5

1.703

0.179

0.185

2.85

2.93

1.500

1.520

1.679

1.703

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Dolomite

1.5

1.703

0.179

0.185

2.8

2.95

1.500

1.520

1.679

1.703

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

Dolomite

1.5

1.75

0.179

0.202

2.85

3.1

 

 

 

 

Gemology Tools Professional 2010

Dolomite

1.502

1.698

0.177

0.185

2.8

2.95

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Dolomite

1.502

1.698

0.177

0.185

2.8

2.95

1.502

1.513

1.679

1.698

Gemmological Tables, Ulrich Henn, 2004 

Dolomite

1.502

1.681

0.179

0.179

2.8

2.9

 

 

 

 

Gems, R Webster, 5th edition 1994 

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

Inclusion

Stone

Reference

svanbergite

Dolomite

Gems & Gemology 2016 Spring, p77

 

LOCALITIES

 

CHEMICAL DATA