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Australian 3.9cts - Quality Gem, Solid Boulder Opal from Koroit

This opal has a near full face of colour displaying oceanic blue and green.

Gems like this from them Koroit opal field are very rare because it produces a high percentage of only matrix material. Such a gem has pooled within the matrix producing an excellent intensity of colour.

Cut to a calibrated oval making it perfect and more affordable for a general casting setting 

Total weight - 3.9cts 

Area of Mine - Koroit , Outback Queensland, Australia 

Dimensions - 12mm x 8mm x 4mm

Formation - Boulder seam opal

Shape - calibrated Oval

Colours - blue and green

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