15.83 ct Attractive Fancy Shape (27 x 17 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)  26.74 x 17.05 x 4.50 mm
Weight  15.83 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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