Grey base Opal rough rub Coober Pedy 17.50cts Band of Green Blue fires to gamble 20x18x7mm Lot B4-A413 wk_auction South AustraliaType: Seam Opal (Rough

South AustraliaType: Seam Opal (Rough Rub)Body Tone: Grey basePlay-of-Colour: Band of green-blue fireForm: Rubbed surface showing partial colour zoneUse: Trimming

A strong mid-tier gamble for cutters looking to refine a large dark-based piece

Lot Title: Lightning Ridge Light Base Opal Rough – 4

🔷 Natural & Untreated🔷 Bright Blue Bar Waiting to be Revealed🔷 Authentic Australian Opal – Safe in Water

Note: smaller size

Grey base Opal rough rub Coober Pedy 17.50cts Band of Green Blue fires to gamble 20x18x7mm Lot B4-A413 wk_auction South AustraliaType: Seam Opal (RoughGrey 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