This is a snowflake obsidian pendant. I cannot find a mark but it did test as sterling silver. The pendant has two bezel set pieces of obsidian. The pendant measures 2-1/8 inches long. It weighs 8.7 grams. There is a small chip on the edge of the top piece of obsidian. I tried to show it in the pictures. Otherwise, the pendant is in good condition but does have an age patina and may need cleaning or polishing. Please let me know if you have any questions. Thanks for stopping by.