Ask the Experts Pearls, Dyed Q&A

Is the color on dyed pearls permanent?

- Taylor, IN

The dyes used to color cultured pearls can fade over time. Because organic pearls are porous, they often absorb human oils, makeup and perfume, which can stain and alter the color of the pearls and the dyes used to color them.

Pearl ''treaters'' take advantage of this porosity to achieve finer, more uniform colors with natural extracts and inorganic and/or chemical dyes and are always striving for long-lasting color. Matched strands are easier to create when dyed, and they're more affordable. It is best to buy as many strands of pearls you will need long term, since dye lots change and it will be challenging to find the exact match in a new batch of pearls.

Crystal-based and glass-based pearls have longer-lasting color, though some will fade in direct sunlight and exposure to salt or chemicals.

Refer to the ''Dye Your Own Pearls'' illustrated instructions for information on custom-dyeing pearls yourself.