Hi
Welcome
What do you mean by natural. I'm betting you mean real pearls, not fake ones. We call those cultured or farmed. Natural pearls are wild pearls and very rare (it would be easier, yes, if they were called wild. Then everyone would understand)
You can see lots of cultured pearls, Mikimoto and many other sellers, online. On line sellers usually allow you to order, receive and then return if you don't like
For what are you looking?