Antique Victorian Cobalt Blue Glass Button Iridescent Luster Geometric Swirl

This dazzling antique Victorian button is made from pressed black glass and finished in a rich cobalt blue luster that catches the light beautifully. The intricate molded design features geometric and starburst motifs with swirling scrolls, offering a high-relief surface and radiant depth. Finished with a japanned black back and a sturdy metal shank, this button is a stunning example of late 19th-century glass artistry, ideal for collectors or statement embellishments.

Material: Pressed black glass with iridescent cobalt blue luster
Design: Geometric starburst with ornate scrolls
Size: 1¼ inch diameter
Back Type: Japanned glass with metal loop shank
Era: Circa 1880s–1890s
Condition: Excellent antique condition