A necklace is an article of jewellery which is worn around the neck . Necklaces are frequently formed from a metal jewellery chain . Others are woven or manufactured from cloth using string or twine. Common features of necklaces include colorful stones (particularly gemstones or jewels), wood (usually carved or polished ), art glass , feathers, shells , beads or corals - a hugely wide variety of other adornments have also been used. If a necklace includes a primary hanging feature, it is called a pendant ; if the pendant is itself a small container, it is called a locket .