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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

Moissanite synthetic

 

 

 

 

3.16

3.16

black

 

a very fine-grained structure, 29ct and 34ct, black diamond imitation

 

 

 

 

 

inert

inert

The Journal of Gemmology 2015 Vol 34, No.5, p399-400

Moissanite synthetic

 

 

 

 

3.187

3.187

green

 

0.27ct

 

 

 

 

 

 

 

ACAM labo 

Moissanite synthetic

2.648

2.691

 

 

3.2

3.24

near colourless to light yellow, green, grey

 

more than 150 polytypes exsist (also 3C: cubic!), but only 4H and 6H can be grown in bulk. 6H is the type used as gem; girles frosted, striated

 

 

 

 

 

 

sometimes orange

Gems & Gemology 1997 winter p260--275

Moissanite synthetic

2.648

2.691

0.043

0.043

3.2

3.24

near colourless

 

hardness 9.25

 

 

 

 

cut off 425nm

usually inert to moderate orange

usually inert to moderate orange

The Journal of Gemmology 1999 Vol 26, N°7,p425-438

Moissanite synthetic

 

 

 

 

3.21

3.21

green

 

0.28ct, doubling facets

 

 

 

 

 

 

 

ACAM labo 

Moissanite synthetic

 

 

 

 

3.21

3.21

brown-yellow, deep green

 

0.85, 0.99 and 1.90ct

 

 

 

 

 

inert

inert

Gems & Gemology 2016 Summer, p212

Moissanite synthetic

 

 

 

 

3.22

3.22

pale grey-green

 

0.90ct, striated finish of the girdle

 

 

 

 

cutoff at 420 nm

inert

very weak orange

Gems & Gemology 1998 Fall, p216

Moissanite synthetic

 

 

 

 

3.256

3.256

green

 

 

 

 

 

 

 

 

 

ACAM labo 

Moissanite synthetic

2.65

2.65

 

 

3.3

3.3

colourless

 

0.13ct, RI reading gemmeter

 

 

 

 

 

 

 

ACAM labo 

 

TABLES

Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

ne min

ne max

no min

no max

Reference

Moissanite synthetic

2.62

2.691

0.043

0.043

3.2

3.24

2.691

2.691

2.620

2.648

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

Moissanite synthetic

2.62

2.695

0.03

0.045

3.14

3.25

 

 

 

 

Gemmo.eu 2013

Moissanite synthetic

2.648

2.691

0.043

0.043

3.22

3.22

 

 

 

 

http://www.gemmology.be 

Moissanite synthetic

2.648

2.694

0.046

0.046

3.22

3.22

 

 

 

 

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Moissanite synthetic

2.65

2.69

0.043

0.043

3.21

3.23

2.690

2.690

2.650

2.650

Gemmological Tables, Ulrich Henn, 2004 

Moissanite synthetic

2.65

2.7

0.05

0.05

3.17

3.17

 

 

 

 

Tabellen zur Edelstein-Bestimmung, Pschichholz FGA, 1975 

Moissanite synthetic

2.65

2.69

0.043

0.043

3.17

3.2

2.690

2.690

2.650

2.650

http://www.geminterest.com 

Moissanite synthetic

2.65

2.69

0.038

0.055

3.22

3.22

 

 

 

 

Gemology Tools Professional 2010

 

CAUSE OF COLOUR

 

CHEMICAL DATA (%)