Grey base Opal rough rub Coober Pedy 17.50cts Band of Green Blue fires to gamble 20x18x7mm Lot B4-A413 wk_auction offering a great opportunity for

offering a great opportunity for cutters looking to bring the colours to life

Lot Title: Lightning Ridge Knobby Opal Trio – 22

New South WalesType: Knobby Opal Formation RoughBody Tone: N4–N5 (Dark Base)Colour Presence: Bit of a colour bar visible

Mostly potch

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Grey base Opal rough rub Coober Pedy 17.50cts Band of Green Blue fires to gamble 20x18x7mm Lot B4-A413 wk_auction offering a great opportunity forGrey Base Opal Rough Rub 17. 50cts Coober Pedy, Band of Green Blue Fires to GambleLot Number: B4 A413Weight: 17. 50 caratsDimensions: 20 x 18 x 7 mm Details: Origin: Coober Pedy, South AustraliaType: Seam Opal (Rough Rub)Body Tone: Grey basePlay of Colour: Band of green blue fireForm: Rubbed surface showing partial colour zoneUse: Trimming, face chasing, or exploratory cutting Description: This 17. 50ct Coober Pedy opal rough rub shows a single