they look like antique pearls that has a "925" stamp on a single side of clasp & "OW" & a world in containers, so 3 containers made up of Just about every letter & one image. just like this graphic I designed. https://janaicfg609744.blogsmine.com/29349950/the-smart-trick-of-south-sea-pearl-necklaces-that-nobody-is-discussing