This is a natural Ethiopian opal bead necklace made of multicolor opal beads measuring 3-6mm in size. The necklace is 18 inches long and features a cluster setting style. The opals are natural and untreated, and the necklace is made of sterling silver with a metal purity of 925. The necklace has a beaded style and a nature theme, and it is perfect for those who love unique and colorful jewelry.