Very unique, custom made locket. This is two different watch chains combined into one necklace w a clasp. You could easily Unassemble and have two watch chains again. I wore as a bracelet. The jasper/agate locket is unmarked rose gold colored (untested, uncertain the gold content). The locket rotates to show either a red or black stone, and opens to a removable frame so you can insert your own picture. The marking is missing or worn off from the largest loop chain. The paper clip type chain is marked 12k.