Large 12mm Imperial-Red Carved Flower Coral BeadsPrice is per 15 inch string of these gorgeous beads. Each measure 12mm, about 30 beads to the string. Hole: 1mm. Coral is known to be used as a gem since prehistoric times. With a history of religious meaning and is one of the seven treasures in Buddhist scriptures. Coral was long thought to be a strong talisman against bleeding, evil spirits, and hurricanes. Its color ranges from white to red. It grows in branches that look like underwater trees.