The most expensive pearl ever sold was Marie Antoinette's pendant. It sold for $32 million ... about 9 or 10 millimeters in diameter, but South Sea pearls and black Tahitian pearls can reach ...
An curved arrow pointing right. South Sea pearls are the largest cultured-pearl variety, sometimes reaching over 20 millimeters in diameter. The Pinctada maxima oyster can take up to five years to ...