Surface
The outer skin of the pearl may be analyzed for smoothness and perfection to determine the "beauty marks" or birthmarks of the pearl.
Every pearl will have some tiny "birthmarks" which add to the character and personality of each pearl.
Most birthmarks are imperceptible to the naked eye and give the pearl character.
The beauty marks help to determine if the pearl is "real", i.e. a natural color natural shape cultured gem.
Simulated pearls, Faux pearls and beads will have a perfectly smooth surface.
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