Red and Black Lava Swirl Vintage Small Glass Button Small 5/16" # GL314
Vintage glass button from Japan with an abstract design in dark red and black. Opaque, semi-shiny glass, no two exactly alike. Excellent vintage condition, but some of the shanks vary slightly as you can see. 5/16" diameter and about 7/16" thick including the metal shank.
Amazing! $1.90 ea.