Pearls: These Pearls are a big 16mm Perfect Round Shell Pearls and are man made - they are not a Cultured Pearl but are still made from same composition with a shell interior. These pearls are perfectly round and very hardy. You can still look after them like a Cultured Pearl ie. no perfume, chemicals or chlorine). Again, interestingly enough, they have a pearl shell interior so are a similar weight as a Cultured Pearl.