In handcrafting this necklace and earring jewelry set I selected 10 x 10 x 14 mm puffed rectangle showflake obsidian beads, 4 mm onyx beads, a fiber optics rose pendant as a center drop and sterling silver findings including 5 mm seamed beads, crimp covers, ear wires, 3 mm faceted beads and a toggle clasp. The necklace is just over 18" in length and the earrings are 1 1/8" plus the ear wires.
The fiber optics (cat's eye) rose flower pendant used as a focal point is 1 1/2" in diameter.