The gorgeous swirls of colors within the lamp-worked glass beads look like the rolling waves of the sea. The black swirls match the BLACK ONYX BLACK ONYXBrings us to action, banishes grief and enhances self confidence. Onyx is a tonic for fear and worry. balls in both the 20mm focal and the 4mm balls that separate the lamp-worked, glass rondelles. The closure is a gunmetal- finished Lobster-claw.