Crystal on Grey base Seam opal rough/rub of Lightning Ridge 6.00cts Bright Blues fires to exposed face 16x16x4mm Lot B4-A030 Up&coming but the internal structure is

but the internal structure is unknown

Features: Large chunk of light base seam opal

Origin: Coober Pedy

Lot: B4-A197Size: 13 x 12 x 9mmWeight: 7

Lightning Ridge Knobby Opal Stack – 49

Crystal on Grey base Seam opal rough/rub of Lightning Ridge 6.00cts Bright Blues fires to exposed face 16x16x4mm Lot B4-A030 Up&coming but the internal structure isAuction Listing for Bid 4. com Lot Title: Crystal on Grey Base Seam Opal Rough Rub 6. 00cts Bright Blue Fires Lot Number: B4 A030 Details: Origin: Lightning Ridge, Australia Type: Seam Opal Rough Rub Carat Weight: 6. 00cts Dimensions: 16x16x4mm Features: Crystal opal on a grey base Bright blue fires visible on the exposed face Perfect for cutting, polishing, or further shaping Description: This 6. 00ct seam opal rough rub from Lightning Ridge features