Metropolitan museum Art rainbow obsidian ANGELO

Rainbow Obsidian necklace from the MET store. Metropolitan Museum of Art. In NYC All the links and beads are obsidian. It is a substantial necklace. All stones are strung on sturdy cord with beads on the end. Vintage unworn necklace that belongs to my mother. She bought it in the late 80’s or early 90’s. It is hallmarked Angelo. No box