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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

Synthetic rutile

 

 

 

 

4.242

4.242

yellowish

 

5.21ct

 

 

 

 

 

 

 

ACAM labo 

Synthetic rutile

 

 

 

 

4.25

4.25

yellow

 

 

 

 

 

 

 

 

 

ACAM labo 

Synthetic rutile

2.62

2.9

 

 

4.26

4.26

colourless

 

5.41ct, RI reading jemeter

 

 

 

 

cutoff 430nm

 

 

ACAM Lab  4082

Rutile

 

 

 

 

4.27

4.27

dark red

 

4.4ct

 

 

 

 

 

inert

inert

Gems & Gemology 2015 Fall, p 335

Rutile

 

 

 

 

4.3

4.3

brownish-black, cat's-eye with intense orange light line

Sri Lanka

0.51 ct

 

 

 

 

 

 

 

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 1998 Dec, p180

Rutile

2.71

2.73

 

 

4.31

4.31

dark red

Brazil

0.56ct, RI jemeter

 

 

 

 

 

inert

inert

ACAM labo  875

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Synthetic rutile

2.45

2.71

0.26

0.26

4.3

4.45

 

 

 

 

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

Rutile

2.534

2.937

0.287

0.287

4.18

4.4

2.837

2.937

2.534

2.660

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

Rutile

2.604

2.902

0.285

0.29

4.2

5.26

 

 

 

 

Gemmo.eu 

Rutile

2.605

2.903

0.285

0.287

4.2

5.6

2.899

2.903

2.605

2.616

http://www.geminterest.com 

Synthetic rutile

2.605

2.905

0.285

0.295

4.2

4.3

 

 

 

 

Gemmo.eu 

Rutile

2.605

2.899

0.287

0.287

4.23

4.23

2.899

2.901

2.605

2.613

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

Rutile

2.609

2.903

0.286

0.287

4.2

4.3

2.895

2.903

2.609

2.616

Gemmological Tables, Ulrich Henn, 2004 

Synthetic rutile

2.61

2.9

0.287

0.287

4.25

4.25

2.870

2.900

2.610

2.620

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Rutile

2.61

2.9

0.287

0.287

4.21

4.25

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Synthetic rutile

2.61

2.9

 

 

4.25

4.25

 

 

 

 

John Sinkakas, Gemstone and mineral data book,1972 

Synthetic rutile

2.61

2.9

0.287

0.287

4.23

4.27

2.870

2.900

2.610

2.620

http://www.geminterest.com 

Rutile

2.61

2.903

0.287

0.287

5.6

4.2

 

 

 

 

Gemology Tools Professional 2010

Synthetic rutile

2.61

2.9

0.287

0.287

4.25

4.25

 

 

 

 

Gemology Tools Professional 2010

Rutile

2.616

2.903

0.287

0.287

4.2

4.3

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Synthetic rutile

2.616

2.903

0.287

0.287

4.24

4.28

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 1981 

Synthetic rutile

2.616

2.903

0.287

0.287

4.23

4.3

2.870

2.903

2.616

2.620

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

Synthetic rutile

2.616

2.903

0.287

0.287

4.26

4.26

2.903

2.903

2.616

2.616

Gemmological Tables, Ulrich Henn, 2004 

Synthetic rutile

2.616

2.903

0.287

0.287

4.26

4.26

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Rutile

2.62

2.9

0.28

0.287

4.2

5.6

 

 

 

 

http://www.gemmology.be 

Rutile

2.62

2.9

0.287

0.287

4.2

4.3

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Rutile

2.62

2.9

0.287

0.287

4.2

5.6

2.900

2.900

2.620

2.620

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Rutile

2.62

2.9

0.287

0.287

4.2

4.2

 

 

 

 

Gems, R Webster, 5th edition 1994 

Rutile

2.62

2.9

0.287

0.287

4.2

5.6

 

 

 

 

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

 

CAUSE OF COLOUR

 

MINERAL INCLUSIONS

 

LOCALITIES

 

CHEMICAL DATA (%)