In that link on the right they list that clay as safe by the UK. I would want to see the same numbers compared to common clays that we use such as french clay to see if these levels of lead, mercury and arsenic are normal? These are natural occuring elements, but at what levels are normal/safe and not to be concerned about?
I dont think until there is more information available I would sell it, but I bought it because I am experimenting with natural colors. From making the soap, it did seem to take alot of clay for the light color I got, so I may just try woad (ordered it) or indigo (out of stock) mixed with something else to get a similar color like Rocky Top Soap has (I love that color!)
Its all experimenting at this point, Im just posting my findings for others who may wonder about it also.