Lowest price:$1,999.99Description: 14kt white gold 8.5-11mm graduated cultured natural black/green color tahitian pearl and round diamond necklace. fancy box style clasp with diamond accents. approximate replacement cost $4600. tahitian pearls are cultivated primarily around the island of french polynesia (the most familiar of which is tahiti) these saltwater cultured pearls usually range from white to black. other colors include dark metallic green and purple.