As opposed to naturally occurring pearls there are also cultured pearls which simply means that a foreign substance is inserted into the tissue of the oyster and returned to the sea, allowing a cultured pearl to develop naturally. Kokichi Mikimoto is credited with perfecting the technique for artificially stimulating the development of round pearls in the akoya mollusks, receiveing a patent for this technique in 1916. Since then this technique which has been improved is being used to culture akoya pearls as well as freshwater, South Sea and Tahitian pearls.
Akoya pearls are the most traditional type of pearl used in necklaces, but freshwater pearls, Black Tahitian pearls, and large South Sea pearls are also used, often to stunning effect. Akoyas, of course, exhibit the traditional white, silver, or cream colors, while Tahitians and South Sea pearls yield pearl necklaces ranging from bright white to darker tones. Freshwater pearls can be either white or pastel, and are generally more affordable than the saltwater options.
Having a variety of colored pearl strands with different types of pendants helps in combining the different colored strands to suit the many colored outfits in the wardrobe.





