As others have said, mine had colored spots. I soaked them in a weak solution of water and bleach for 2 hours. Three out of 10 basically dissolved and broke into pieces. The bleach didn't touch the stains and they're a bit soft now. I think the seller covers them with glue and dries on a colored material that penetrates the shell. If you're looking for a good case, look elsewhere. If you plan on coloring the shell, this might be the way to go. Just don't get them wet. Also, out of 10, only 2 were 2 inches in diameter.
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