Knobby Seam fossil rough 220.00cts Lightning Ridge Potch & some tiny bits of colour only 25mm to chip size Lot B4-A767 wk_auction

Knobby Seam fossil rough 220.00cts Lightning Ridge Potch & some tiny bits of colour only 25mm to chip size Lot B4-A767 wk_auctionLot Title#Grade CD Gamble Knobby Seam & Fossil Rough Parcel (Lightning Ridge) Lot NumberB4 A767 DetailsWeight: 220. 00 ctSize Range: Up to ~25 mm (down to chip size)Origin: Lightning Ridge, AustraliaType: Knobby Seam Fossil Opal RoughUse: Potch & Colour GambleColour: Mostly potch with some tiny bits of colour DescriptionLarge 220ct parcel of Lightning Ridge rough made up of knobby seam fragments and fossil opal chips. Mostly potch with only small

00ct Coober Pedy seam opal features attractive blue colour play across a clean light base

Lot Title: Lightning Ridge Grey Base Knobby Opal Rough Split – 8

Compact yet full of life

with cutting potential

⚠️ Gamble Grade B (Gamble)Colour visible and promising – moderate risk

Type: Red Host Rock Opal Formations (Not for Cutters)

50 caratsDimensions: 18 x 17 x 8 mm

Ideal for cutters who enjoy evaluating and working through rough to reveal faces

this piece has visible face colour with enough structure for a solid cut — but still needs care to work around host zones

and fossil fragments

🔥 Grade A to B Cutter’s GambleStrong face showing – low to medium risk

Carat Weight: 64