In creating this necklace I combined 3 and 8 mm carnelian beads, graduated turquoise disks and sterling silver findings including round beads, bulk chain and a hook clasp.  The necklace can be adjusted from 21 1/2" to 24 1/2" and the disks vary from about 7/16" to 5/8" in diameter and in thickness from 1/16" to 3/16".