Hello group. I recently purchased these 3 necklaces and need help identifying them. They are very irridescent and have 14k clasps. There is a tag on on two of them reading Samourai cultured pearls with a price of $175.00 on the back. One necklace is larger and the pearls are shaped differently and not as colorful. They are older and have amethyst also. I researched Samourai for over an hour and can only find some information about a International Pearl Summit which mentions someone from Samourai and mentions Switzerland. Any information would definitely be appreciated. Thank you all.