Art Deco Czech Brooch Gold Tone Metal. This Czech glass brooch hosts a superb mix of brilliant gemstone colored Czech glass set in a fancy gilded brass open metal work design. These glistening Czech glass stones are prong set in gold washed brass. The brooch is slightly domed as was the fashion of the day. Colors are blue, green, red, yellow and purple representing birthstone colors such as sapphires, emeralds, rubies, garnets, topaz and amethysts. This Czech brooch measures two inches round. This Art Deco brooch is in good vintage condition.