This is a beautiful vintage pendant. Front side has gorgeous blue background and silver images of pyramid, sun and moon. Back side has pink background with a silver disc (has tiny imprints I can’t read. Both sides had colorful, iridescent inlay that changes color in light. Reminds me of opal colors. The all the colors change depending on the light. Pendant measures 3/4 inch. Will come on adjustable cord. There is a “Mexico “ stamp but I do not see a silver stamp. However it is not reactive to magnets so possibly actually silver (this is not guaranteed). It really is beautiful!