The size of these branch coral beads is approximately 4mm thick. 7-16mm lengths. These are short but pretty substantial. Natural color! Graduated in size and a full 24" of coral branch beads. What a nice value for this kind of coral. Limited. There are very strict rules set in place regarding the importation of coral into the United States. International law protects the rarest and endangered coral in all parts of the world. Many varieties of coral are considered sustainable and in reality they grow faster than they are being harvested. These beads are hand cut as well. As with any handmade bead, please expect slight imperfections in size, shape and color.