Lots of blues showing in this dark base seam opal rough 6.00cts Lighting Ridge material to cut 23x14x4mm Lot B4-A749 Premium 40ct Coober Pedy opal doublet

40ct Coober Pedy opal doublet features a gem-quality crystal opal expertly mounted on a boulder backing

Lot Title: Coober Pedy White Base Seam Opal Rough – 8

50ct Coober Pedy crystal opal rough features a light base with dominant blue and green multifire showing through the body

Carat Weight: 13

Large size seam split pair

Lots of blues showing in this dark base seam opal rough 6.00cts Lighting Ridge material to cut 23x14x4mm Lot B4-A749 Premium 40ct Coober Pedy opal doubletLot Title#Grade B Cutter Blue Rich Dark Base Seam Opal Rough from Lightning Ridge Lot NumberB4 A749 DetailsWeight: 6. 00 ctSize: 23 x 14 x 4 mmOrigin: Lightning Ridge, AustraliaType: Dark Base Seam Opal RoughUse: Cutting RoughColour: Blue fire DescriptionLightning Ridge seam opal rough with lots of blue fire showing across a dark base. The bar appears broad and well positioned, with good surface colour and cutting potential. A classic Grade B piece