Luster often is the innermost radiance of the pearl. Once the luster quality is high the radiance of the pearl can be very strong. Should the luster of a cultured pearl is sub standard the look will show itself as white colored or lackluster. Structure comes with the smoothness of the pearl. Any pearl nuggets which were chipped are considered to be defective pearls. Pearls that are raised in an oyster or that are all-natural gemstone ” usually are classic. Whether a gem quality has bit of scars at close evaluation. Shop the latest pearl bracelets on the world’s largest fashion site. Shop outside the big box, with unique items for freshwater cultured pearls from thousands of independent designers and vintage collectors.