||A brief history of pearls
LUSTER OF SOUTH SEA PEARLS
South Sea pearls produce a luster unlike any other type of pearl can produce. The term luster refers to the way a pearl's surface reflects and refracts light.
South Sea Pearls' Nacre Lends Itself to Brilliance
Because South Sea pearls have a particularly thick coating of nacre, they usually have a soft, rich luster. They often have a satiny sheen, and they're less mirror-like than other cultivated saltwater pearls are.
South Sea pearls have a beautiful iridescence that you won't see in pearls with thinner nacre.
Judging a South Sea Pearl's Value on Luster
Luster is one of the most important factors in any pearl's value, and it's no different with South Sea pearls. These iridescent gems range in value based on how lustrous they are; more lustrous pearls justify a higher price because they are rarer and more prized than those with low lusters are.