20.29 ct World class Fancy Shape (28 x 20 mm) Multi Color Australian Koroit Boulder Opal Natural Loose Gemstone
Rare Stone! Unheated / Untreated Multi Color Orgin From Australia
100% Natural Genuine Mined from Earth Gemstone!!!

 


Gem Type  Boulder Opal
Color  Multi Color
Shape  Fancy
Size(LxWxD)  27.72 x 20.18 x 4.52 mm
Weight  20.29 ct
Hardness  6.5
Luster  Very Good
Clarity  Opaque
Treatment:  Unheated / Untreated
Origin  Australia
RefractiveIndex 1.37-1.47
Specific Gravity 2.1

Clarity Scale
 
IF VVS VS SI I1
Internally flawless; free of inclusions Very, very slight inclusions; inclusions barely seen under 10x magnification Very slight inclusions; inclusions can be seen under 10x magnification Slightly included; small inclusions seen by naked eye Included; inclusions seen with naked eye
  
  


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