A farm in the Gulf of California, Mexico, is culturing pearls from the black lipped Pinctada mazatlanica oysters and the rainbow lipped Pteria sterna oysters.Concha Nacar | The Sea of Cortez Pearl Blog . Perlas.com.mx (November 22, 2010). Retrieved on October 14, 2015. Also called Concha Nácar, the pearls from these rainbow lipped oysters fluoresce red under ultraviolet light.
A farm in the Gulf of California Mexico is culturing pearls from the black lipped Pinctada mazatlanica oysters and the rainbow lipped Pteria sterna oystersConcha Nacar | The Sea of Cortez Pearl Blog  Perlascommx (November 22 2010) Retrieved on October 14 2015 Also called Concha Nácar the pearls from these rainbow lipped oysters fluoresce red under ultraviolet light