Stunning Estate 925 Sterling Silver Diamond Red Ruby Charm Necklace. This gorgeous piece features numerous red ruby beads strung with sterling silver ruby and diamond charms. The necklace measures 18 inches long by .25 of an inch wide. The charms vary in sizes from 3/8 of an inch long to one inch long. The item weighs 32.4 grams. The necklace measures 18 inches long.