Black Onyx and Sterling Silver Half-Round Bead Necklace Mexico

Vintage hand made sterling silver half-round beaded necklace. It has one round bead at center from and some very nice black onyx disk beads. Measures 21" long. Beads are 10mm in diameter. Well made slide in locking clasp that is hallmarked. Made in Taxco, Mexico. Weight: 120.6 grams. Needs a light polishing.