Biwa pearls are a cultured fresh water pearl named after Lake Biwa in Japan. The shades of peach, cream and pink added to the intense turquoise of the Peruvian opal make this necklace a stunner. The "blue" Peruvian Opal is cherished as a healing gemstone. The necklace is 20 inches long and has a sterling silver designer comfort clasp. You will be sure to get compliments wearing this beauty.