Check for uniformity: real pearls often have slight variations in shape and size
Inspect the surface closely: real pearls usually have minor natural imperfections; imitation often looks perfectly smooth
Look for a natural luster: real pearls show depth and a soft glow rather than a harsh shine
Perform the “magnification” check: use a jeweler’s loupe to look for natural texture and irregularities
Examine the drill holes: real pearls typically show natural wear and roughness around holes; many imitations show smooth, machine-like edges
Do the “weight” check: real pearls often feel cooler and slightly heavier than many glass/plastic imitations
Feel the temperature: pearls often feel cool to the touch at first; some imitations feel warm quickly
Do the “tooth” test: gently rub a pearl against your front tooth—real pearls often feel slightly gritty; smooth glass/plastic feels slick
Do the “string” test: real pearls are usually strung with knots between pearls; some fakes also use knots, so this is not definitive
Look for nacre layering: real pearls have multiple layers; many imitations lack distinct layering
Check for color consistency: real pearls often show subtle color shifts and uneven undertones; many fakes look uniform
Use a UV flashlight: some imitations fluoresce differently; results vary, so treat as a supporting clue
Check with a jeweler: ask for an assessment using tools (e.g., microscope) and testing methods (e.g., X-ray/thermal/EPS)
Request a reputable grading report: look for documentation from recognized gemological labs