Hey guys! I shared with you a few months ago my janassa toothplate, but the tooth has been showing some signs of progressive discoloration. It is slowly starting to grey in some areas, but’s never been exposed to vinegar or any real form of fossil prep. It is not moved around either so it’s not getting dinged up. Is this cause for alarm? I know only parts of the fossil are changing now, but I just want to ensure that the fossil isn’t going to be damaged by this in the future. Thank you.