freshwater vs cultured pearls
Cultured pearls are created in nature with human intervention. Cultured pearl exists in two categories - freshwater cultured pearl and saltwater cultured pearl (akoya, Tahitian and South Sea). But "Cultured pearls" is still commonly used today to refer to akoya pearl. It is important to know that a seller can describe freshwater pearl as cultured pearl which is not wrong. Just make sure whether it is freshwater pearl or akoya pearl when they describe as "cultured pearl" because freshwater pearl is less valuable than akoya pearls with equivalent quality.