Cleaning scum off diamond

Sorry if I have missed this posting but I am surprised nobody is
mentioning the fact that ammonia is destructive to any diamonds that
may have been “treated”. My jeweler said don’t use it as a general
rule. I used to use it everyday. I like TopJob, it’s called
something else now though. I used it always to get rough off my
models in the dental lab.

Jo McCullough
Sanger TX