Each black onyx stone in this necklace is hand wrapped with sterling silver. The centre sterling silver bead is quite the shiny and eye catching focal point with a 16 mm diameter. The side accent bead has a 12 mm diameter and the black onyx stones range from 14 mm down to 8 mm. I've placed them on the necklace so they make a smooth transition to the smallest stones in the back - this makes it quite comfortable to wear. It finishes with a simple sterling silver lobster spring clasp for security.