Magnificent Antique Calibrated Round Red Undyed Coral Necklace Bracelet. This gorgeous necklace features 48 natural round undyed red coral beads and the bracelet holds 18 natural round undyed red coral beads. Each bead in the unique and rare set measures 11 mm in diameter. The total weight of the necklace and the bracelet is 126 grams. The necklace measures 24 inches long and the bracelet measures 8 inches long.