"Seed pearls" are tiny, the size of seeds, and usually quite round. I would call these "rice pearls" because they are bigger, more rice shaped. Freshwater is my guess. Looks like a current clasp from any number of countries or islands. Could be Sterling Silver, you would have to test. The value is going to be based on the clasp being Sterling 925 or not. Also depends on where you sell. Ebay has a great way to put in the description "rice freshwater pearls sterling necklace" and check solds...that gives you an idea what you could get for it...once you test or have the clasp tested.
