Ebayers should be careful when buying pearls with this listing.  Some sellers make it sound like they are selling salt water cultured pearls like Tahitian or South Sea when in reality what they are sellling are faux pearls.  They  use a bead made of shell and coat it with a man made or synthetic nacre which gives it the appearance of a fine pearl.  In most cases they are sold quite cheaply but if the buyer thinks they are getting a deal on real cultured pearls they are in for a shock when they try to get them appraised.   Contacting the seller usually results in being told that they are natural pearls, only when pressed will they admit the truth and even then they still try to make the case that since the shell is natural, the pearl is a natural pearl.