Irradiation has a peculiar effect on freshwater to shore and cultured pearls. Gamma rays do not affect the nacre layers of a shore cultured pearl, but will darken the nucleus of the pearl. Saltwater pearls that are irradiated will be clouded to indigo. Freshwater irradiated pearls can become model faint, any of these freshwater treated pearls may likewise have an all-consuming geologic sheen over their depthless.
Coating a pearls to enhance its luster is not widely practiced and is frowned upon. The coating is like putting unclouded nail polish. The coating may eventually chip or peel, leaving a low-luster pearl that is a treatment to watch for.
Luster treatments are model hard to find. The inherent way to find the luster treatment is to compare an underdone strand with the strand that you think out of date treated. You can put the strand under 50x magnification. The underdone pearl will have a scabby nacre depthless and the coated pearl will have a undeviating, glass like depthless.
All pearls are processed in some such way. You as the pearl consumers should be aware of total the treatments before you are going to buy these usual beauties to add to your jewelry collection.
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