These gems are a total black. These glass gems are an absolute necessity for mosaics that use any shades of orange or yellow, especially abstract designs. These glass gems accentuate other colors surrounding them, giving that captivating aura to the end product. Black glass gems are perfect for refrigerator magnets. These glass gems are roundish - some are round and some more oval; they vary in size and shape and generally range around 17-19mm. Choose Gemnique glass gems for the finest quality. GM1260-48