Bidspirit auction | Cobalt Blue Slag Glass Cullet

Cobalt Blue Slag Glass Cullet - Two raw chunks of translucent cobalt blue slag glass cullet. Each irregular piece features heavy striations and a conchoidal fracture pattern typical of cooled industrial glass. Height: 4.75 inches Length: 6.5 inches. Both pieces are in overall good condition with the sharp, jagged edges and irregular surfaces characteristic of raw cullet. A rough grey residue is visible on the underside of the horizontal piece.