In handcrafting this 19" triple-strand necklace I combined 5 mm round onyx beads, 8 x 6 mm rice onyx beads, 5 mm clear quartz crystal beads, three huge tumbled clear quartz crystal nuggets and sterling silver findings including 10 mm end cap beads, 4 mm round beads and a toggle clasp. The three quartz nuggets are just over an inch in length. The sterling end caps are just over a half gram each and rather expensive. The look is unique and classy!