125 Unusual Siamese Red Sea Bamboo Coral BeadsPrice is per 16 inch string of Genuine Chinese coral, dyed red but colour fixed. Each bead measures 6mm x 3mm, drilled in centre. About 125 to the string. Coral is not a true gemstone, but a product of marine life. However, it's been used as a gem since prehistoric times. With a history of religious meaning, like being one of the seven treasures in Buddhist scriptures. Coral was long thought to be a strong talisman against evil spirits and hurricanes.