I found an imperfection in the cap on an ammonite doublet freeform
and decided that I had nothing to loose, so I tried to polish it out.
I was able to remove the imperfection using fine sand paper and
tripoli polish. Unfortunately I ruined the “glossy” surface of the
cap. If I wet the ammonite, it looks great, but as soon it dries out,
the surface gets hazy and the iridescence of the ammonite does not
come through. I tried to fix this with both red rouge and green
rouge, but neither helped.
I always thought that these ammonites were capped with quartz or
something similar, but the cap on this one seems more like a
polymer/plastic. When I was sanding and polishing, I smelled
something like burnt plastic.
Can anyone suggest how I can clean this up and make this nice
ammonite brilliant again?