21.76 ct Shimmering Fancy Cabochon Shape (18 x 17 mm) Play of Colors Australian Koroit Boulder Opal Natural Loose Gemstone
Gorgeous Natural Gemstone Genuine & Mined from Earth
100% Natural Genuine Mined from Earth Gemstone!!!

 


Gem Type  Boulder Opal
Color  Play of Colors
Shape  Fancy Cabochon
Size(LxWxD)  18.16 x 16.92 x 6.65 mm
Weight  21.76 ct
Hardness  6.5
Luster  Excellent
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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