aplomado Posted December 7, 2017 Share Posted December 7, 2017 I'd like to whiten a fossil sea urchin. Is hydrogen peroxide effective and harmless? I'm thinking 3%... any tips? Link to comment Share on other sites More sharing options...
caldigger Posted December 7, 2017 Share Posted December 7, 2017 Not sure if is going to "whiten" your fossil, it tends to work well at assisting the cleaning process with stubborn matrix in crevices. I use whatever the over the counter percentage is on teeth and other such pieces with no problems experienced. Why do you want to whiten it? Link to comment Share on other sites More sharing options...
JohnBrewer Posted December 7, 2017 Share Posted December 7, 2017 I don’t think it will whiten what is effectively rock. H2O2 is basic so will bleach things like modern bone. John Map of UK fossil sites Link to comment Share on other sites More sharing options...
aplomado Posted December 8, 2017 Author Share Posted December 8, 2017 The urchin has some stains on it, I wanted to remove. Thinking about making it into a necklace. Link to comment Share on other sites More sharing options...
JohnBrewer Posted December 8, 2017 Share Posted December 8, 2017 Maybe post some pictures. John Map of UK fossil sites Link to comment Share on other sites More sharing options...
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