Glass beads designed with the upper half and the lower half divided into two colors. It is often translucent and has blurred color boundaries. It is attractive that the two colors appear alternately when connected with a cord. Although it is a standard design, it is a design that beads with exactly the same design and color combination will never be available. Since it is made by hand with burner work in a tropical Javanese workshop, it is also characterized by a large variation in shape even with the same part number.