36.87 ct Fancy Cabochon Shape (36 x 19 mm) Australian Koroit Boulder

36.87 ct Premium Fancy Cabochon Shape (36 x 19 mm) Play of Colors Australian Koroit Boulder Opal Natural Loose Gemstone Rare Stone! Unheated / Untreated Play of Colors Orgin From Australia 100% Natural Genuine Mined from Earth Gemstone!!! Gem Type Boulder Opal Color Play of Colors Shape Fancy Cabochon Size(LxWxD) 36.42 x 19.22 x 6.53 mm Weight 36.87 ct Grade  AAA Hardness 6.5 Luster 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 Track Page Views With Auctiva's Counter

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