This necklace is made of natural Baltic Amber beads and 925 sterling silver. The length of the Amber necklace is 16" long and the size of the largest bead is 2x1x0.6". The weight of this necklace is 34 grams. Amber is fossil tree resin, which is appreciated for its color and beauty. This necklace is hand made out of 100% natural and authentic Baltic Amber from Lithuania.