Check for slight surface imperfections
Look for a soft, natural luster rather than a mirror-like shine
Rub two pearls gently together; real pearls feel slightly gritty
Feel for a cool touch that warms slowly in your hand
Examine the drill holes for clean, even nacre layers
Compare size and shape; real pearls are rarely perfectly identical
Look for subtle color overtones instead of a flat, uniform color
Use a magnifying glass to spot layered nacre and tiny natural irregularities
Check weight; real pearls usually feel heavier than imitations of the same size
Ask for a reputable certificate or appraisal from a trusted jeweler