This is a stretch bracelet made from chunks of red coral. The bracelet has a maker's mark on a small silver disk with a large D and a smaller T over an R and CHINA. The bracelet is adjustable. The larger pieces of coral are 15 mm or so. The smaller pieces range from 6 to 8 mm. The bracelet is in very good condition but may need cleaning or polishing. Please let me know if you have any questions. Thanks for stopping by.