30.85ct Koroit Australian Boulder Opal | #E275 Prehnite Stone Shape: Polished Rectangular Cabochon

Stone Shape: Polished Rectangular Cabochon Cut

average diamond clarity: I1

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16mm Origin Manassa

30.85ct Koroit Australian Boulder Opal | #E275 Prehnite Stone Shape: Polished Rectangular CabochonKoroit Boulder Opal Weight 30. 85 carats Origin Koroit Mining District, Queensland, Australia Shape Freeform Carved Cabochon Dimensions (millimeters) 31. 63mm x 16. 61mm at widest point x 7. 18mm at thickest point Dimensions (inches) 1. 25" x 0. 65" at widest point x 0. 28" at thickest point Body Tone (+N1 to N9 ) N A Boulder Opal Brightness ( 1 to 5+) B5 Predominant Colors Reddish pink and orange overtones with purple, blue and green undertones