Blues in a Crystal bar sat on dark base Seam opal rough 20.00cts Coober Pedy Sold as Gamble 21x15x14mm Lot B4-A420 Premium Finished Opal Quality Grade KeyGrade

Finished Opal Quality Grade KeyGrade     Description✨ Extra Fine   Top-tier gem with elite fire

making this knobby opal a valuable addition to any collection

Great shape and size for small cutters looking to work a solid bit of Ridge colour with a clear direction for shaping

Lot Title: Big Black Opal Rub/Rough – 29

featuring a bright and vibrant opal layer set against an ironstone backing

Blues in a Crystal bar sat on dark base Seam opal rough 20.00cts Coober Pedy Sold as Gamble 21x15x14mm Lot B4-A420 Premium Finished Opal Quality Grade KeyGradeBlues in a Crystal Bar Sat on Dark Base 20. 00cts Seam Opal Rough, Coober Pedy (Sold as Gamble)Lot Number: B4 A420Weight: 20. 00 caratsDimensions: 21 x 15 x 14 mm Details: Origin: Coober Pedy, South AustraliaType: Seam Opal (Rough)Body Tone: Dark base with crystal barPlay of Colour: Blue fire in crystal bar formationForm: Thick seam with visible layerUse: Testing and colour chasing Description: This 20. 00ct Coober Pedy seam opal rough shows a blue