: Look for minimal blemishes. While completely flawless pearls are rare, the best specimens have few pits, bumps, or cracks.
When reviewing a potential purchase, evaluate these key attributes used by experts at the Gemological Institute of America (GIA) : how to buy a pearl necklace
: The intensity and sharpness of reflections on the pearl's surface. Excellent luster shows bright, mirror-like reflections. : Look for minimal blemishes
: Perfectly round pearls are the rarest and most valuable, though unique "baroque" shapes are popular for contemporary designs. the best specimens have few pits
“Luster is the most important factor when evaluating pearl quality... Without good to excellent luster, pearls will appear dull and chalky.” Pearls of Joy