They are real "Fresh Water Pearls". I don't know if you know the differance between freshwater and saltwater pearls.
Freshwater pearls are valued by their closeness to perfect round, how mirror-like the luster is and how much imperfections are present.
Here is a really good Pearl Jewelry site to check out. http://www.pearlhours.com/index.php?url=search&styles=&types=freshwater&color=&size1=&size2=&price=&button=Search