It might be recycled glass.
Cobalt Blue Glass Individual Ashtray Scallop Shell 3-Footed
Cobalt Blue Glass Empoli Blue Glass Brandy Snifter Vase Vintage
Vintage Retro Cobalt Blue Glass Posey Bowl Trinket Bowl Blue Art Glass
Cobalt Blue Glass Bell Bristol Blue Style Victorian Inspired Clear Handle 5”
Blue Bird of Happiness Small Cobalt Blue Glass Bird Leo Ward 1995
