Garnet Glass Brooch Signed Czechoslovakia. This pretty brooch hosts an emerald cut piece of garnet glass as well as many small garnet glass rounds set in gilded brass and signed Made in Czechoslovakia on the pin stem. Closes with a C clasp. Garnet is the birthstone for January. Providing the look of Bohemian garnets for far less the going rate, this estate Art Deco Czech Garnet Glass Brooch is in good condition.