Gemologists can use dye testing to determine if a gemstone has been dyed to alter its color. Learn how to perform this procedure safely here.
2 Minute Read
You can often distinguish dye in a gem with a microscope. See our article on identifying inclusions found in enhanced stones for more information on this. Remember, dye testing is a destructive test, so always examine your specimen with a microscope first.
The testing procedure presented here is a last resort, in cases where the microscope exam proves inconclusive.
Many soft, porous gems often receive dyes. Lapis lazuli is one of the most common recipients of dyes. Any dark lapis is suspect and needs testing. The same holds true for turquoise.
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You can often distinguish dye in a gem with a microscope. See our article on identifying inclusions found in enhanced stones for more information on this. Remember, dye testing is a destructive test, so always examine your specimen with a microscope first.
The testing procedure presented here is a last resort, in cases where the microscope exam proves inconclusive.
Many soft, porous gems often receive dyes. Lapis lazuli is one of the most common recipients of dyes. Any dark lapis is suspect and needs testing. The same holds true for turquoise.
…
Gemologists can use dye testing to determine if a gemstone has been dyed to alter its color. Learn how to perform this procedure safely here.
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