Lightning Ridge Gem Black opal rubs 6.50cts Highly Bright & vibrant Gem Quality rough for cutters 12x9x3mm to 7x5x2 mm Lot B4-A806 wk_auction Great for training

Great for training

This exquisite jewellery-grade opal doublet from the world-famous Lightning Ridge is a true masterpiece of nature

or gamble cut

this knobby rough is an exciting choice for cutters looking to chase colour or collectors wanting genuine Australian opal with potential

Excellent size for collectors or cutters who enjoy chasing deep potential

Lightning Ridge Gem Black opal rubs 6.50cts Highly Bright & vibrant Gem Quality rough for cutters 12x9x3mm to 7x5x2 mm Lot B4-A806 wk_auction Great for trainingLot Title#Grade A+ Gem Cutters Lightning Ridge Black Opal Rubs (Highly Bright Gem Quality) Lot NumberB4 A806 DetailsWeight: 6. 50 ct (parcel)Size Range: 12 x 9 x 3 mm to 7 x 5 x 2 mmOrigin: Lightning Ridge, AustraliaType: Black Opal RubsUse: Precision Cutting High End GemmakingColour: Highly bright multicolour (Gem Quality) DescriptionPremium grade parcel of Lightning Ridge black opal rubs a 6. 50ct selection of small, gem quality stones for serious