Stone

RI min

RI max

Dens min

Dens max

Colour

Location

Info

Spectrum

UVS

UVL

Reference

Periclase

1.735

1.735

3.61

3.61

very light yellow

Crestmore, California, USA

15.94ct

no features

inert

inert

GIA Gem Database  35196

synthetic periclase

1.736

1.736

3.59

3.59

green

piece of rough

no features

inert

inert

Gems & Gemology 1997 Fall, p216

synthetic periclase

1.736

1.736

3.59

3.59

yellowish green

18.98ct

weak orangy yellow

inert

Gems & Gemology 1997 Fall, p216

synthetic periclase

1.737

1.737

3.55

3.6

colourless

The Journal of Gemmology 1970 N°4,p129

Periclase

1.738

1.738

3.61

3.61

orange-yellow, translucide

Mogok, Myanmar

cabochon, 27.81 carat

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2002 Dec, p188-189

synthetic periclase

1.738

1.739

3.59

3.6

light green

5.18ct, 10.55ct

inert

inert

ACAM Lab  1565, 4572

synthetic periclase

1.738

1.738

3.58

3.58

green

Gemmologie, Zeitschrift der Deutschen Gemmologischen Gesellschaft 2012 Dez, p69

Periclase

1.738

1.738

3.59

3.59

near colourless

5.49ct

none

weak yellow

inert

Gems & Gemology 1996 Spring, p48

synthetic periclase

1.739

1.739

3.59

3.59

green, colourless, orange, yellow

green stone: faint yellow

green stone: faint yellow

GRS Contributions to Gemology Special Alert Issue 2018 19 Dec

Stone

RI min

RI max

Dens min

Dens max

Reference

synthetic periclase

1.73

1.745

3.55

3.7

Gemmo.eu 

Periclase synthetic

1.734

1.738

3.58

3.76

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

Periclase

1.734

1.746

3.55

3.7

Gemmo.eu 

Periclase

1.736

1.736

3.56

3.56

http://www.gemmology.be 

Periclase

1.736

1.736

3.56

3.56

Joel Arem, Color Encyclopedia of Gemstones, 1987 

Periclase

1.736

1.738

3.56

3.9

http://www.geminterest.com 

Periclase

1.736

1.745

3.56

3.68

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

Periclase

1.736

1.736

3.5

3.56

Gemology Tools Professional 2010

Periclase synthetic

1.737

1.737

3.55

3.6

http://www.geminterest.com 

Periclase

1.737

1.737

3.55

3.6

Gems, R Webster, 5th edition 1994 

Periclase

1.738

1.738

3.61

3.61

Gemmological Tables, Ulrich Henn, 2004 

Periclase synthetic

1.738

1.738

3.75

3.75

Gemmological Tables, Ulrich Henn, 2004 

Periclase synthetic

1.738

1.738

3.58

3.6

John Sinkakas, Gemstone and mineral data book,1972 

Periclase

1.738

1.738

3.76

3.76

Bestimmungstabellen für Edelsteine, Birgit Günther, 2008 

Periclase synthetic

3.55

3.75

Joel Arem, Color Encyclopedia of Gemstones, 1987