Edison Pearls are new to the Pearl market and were introduced in 2014 after 12 years of pearl farming research to cultivate this new species of giant freshwater pearls in exotic colors. Edison pearls come in so many exquisite natural colors because the pearl mussels used for cultivation have undergone ten years of gene modification and development by researchers at the Zhejiang University.
Most freshwater pearls are nucleated with tissue, but Edison cultured pearls are nucleated with beads, like saltwater pearls, enabling them to have their virtually perfect round shape. The beads are implanted into the mussels, with a special technique - which is a highly guarded secret. Only one bead is implanted in each mussel, allowing for a much larger sized pearl to grow inside the shell.
The mussels are then cultivated in a natural-flowing, mineral-rich aquatic environment for more than three years, which results in a spectrum of beautiful colors. Their colors range from off-white, pink, peach, plum, gold and lavender. (Source: https://timelesspearl.com/)