Dramatic Rich-Chocolate Peacock-Gold Keshi PearlsPrice is per 15 1 2 inch string of these shiny lustrous pearls. Largest in the string is a large 15mm x 8mm x 4mm about 58 pearls to the string. Beautiful rich dark golden brown colour. Cultured pearls Most pearls these days are cultured. These natural freshwater pearls occur in mussels for the same reason saltwater pearls occur in oysters. Foreign material inside a mussel can't be expelled. To reduce irritation, the mollusk coats the intruder with