Check the surface for slight imperfections and natural variation
Look for a soft, deep luster rather than a glassy shine
Rub two pearls gently together; real pearls feel slightly gritty
Examine the drill hole for layered nacre and uneven edges
Compare weight; real pearls usually feel heavier than imitations
Look for temperature; real pearls feel cool at first and warm slowly
Inspect shape; real pearls are often not perfectly identical
Use a magnifying glass to spot tiny surface ridges or growth marks
Test with light; real pearls often show subtle color overtones
Ask for certification from a trusted jeweler or gem lab