Gorgeous Blues on Black Crystal base 6.75cts Lightning Ridge material to cut 14x9x8mm Lot B4-A345 ToClear New South WalesType: Knobby Seam

New South WalesType: Knobby Seam & Fossil Potch (Rough)Body Tone: Light to dark potchColour Presence: None – zero visible play-of-colourComposition: Mix of seam fragments

Type: Knobby Opal Formation Rough (with sand/clay host rock)

Type: Solid boulder opal gemstone

Size: 12x9x4mm

both sitting on a dark base

Gorgeous Blues on Black Crystal base 6.75cts Lightning Ridge material to cut 14x9x8mm Lot B4-A345 ToClear New South WalesType: Knobby SeamLot Title: Lightning Ridge Black Crystal Base Opal Rough 6. 75cts Gorgeous Blues to Cut Lot Number: B4 A345 Details: Origin: Lightning Ridge, Australia Type: Black Crystal Base Opal Rough Carat Weight: 6. 75cts Size: 14x9x8mm Features: Striking blue fires on a rich black crystal base Strong shape and thickness for cutting Ideal material for a fine finished stone Description: This 6. 75ct opal rough from Lightning Ridge features gorgeous blue colour