South Sea pearl June 22, 2016 By Jewelmer Joaillerie natural or cultured pearl produced by the Pinctada maxima mollusk 2 responses to “South Sea pearl” Greetings, I recently purchased a south sea pearl earring from manila. I am curious to know if the South Sea Peals are sea water pearls or freshwater pearls since its cultured? Thank You Dear Salima, Thank you for commenting and our apologies for the delayed response. South Sea pearls, whether cultured or formed naturally, are from the sea since that’s where the oyster forming these pearls can thrive. Comments are closed.