Black onyx!
Hang a single ball in matte gold as an eye-catcher on the bracelet. It makes a beautiful contrast against the black onyx beads. Attach a jump ring to the pendant (the ball) by opening and closing the eyelet with two pairs of flat-nosed pliers. Thread the pendant and onyx beads, thread a small metal bead between each one, on the round elastic thread without a needle. Try the bracelet and tie a few knots one on top of the other. Make sure the knots are thoroughly tightened before cutting the ends. Tools needed are a pair of scissors and two pairs of flat-nosed pliers.