This 24" necklace is made of small black onyx beads, each bead sandwiched between two sterling silver caps. The clasp is the type used during the 1980's and 1990's, a toggle and loop, very easy to use. The beads are strung on fishline. There is a tag on the clasp that reads "Mexico 925." The beads are in excellent original condition. They weigh 31.7 grams. These beads are very versatile; they can be worn by themselves, with other necklaces, or with a pendant hanging from them.