Nice Sized Blue on Black seam opal rough 19.75cts Good zone of colour showing through skin in bar to cut or carve 24x20x8mm Lot B4-A729 wk_auction Great choice for jewellers or

Great choice for jewellers or collectors chasing a clean

Gamble Grade:| 🎲 Gamble Grade C (Gamble) | Bright red/orange bling showing – unknown depth and spread

20ct small dark crystal knobby rough from Lightning Ridge features a gemmy blue and green bar that promises stunning results when cut

these pieces offer excellent potential for cutting and uncovering something spectacular

Flat bar shape

Nice Sized Blue on Black seam opal rough 19.75cts Good zone of colour showing through skin in bar to cut or carve 24x20x8mm Lot B4-A729 wk_auction Great choice for jewellers orLot TitleBlue on Black Seam Lightning Ridge Rough with Cuttable Bar Lot NumberB4 A729 DetailsWeight: 19. 75 ctSize: 24 x 20 x 8 mmOrigin: Lightning Ridge, AustraliaType: Seam Opal RoughUse: Cutting CarvingColour: Blue on black base DescriptionNice sized seam opal rough from Lightning Ridge with blue fire on a black base. A solid zone of colour is showing through the skin, following a promising bar across the stone. Great size and proportion for