Is it OK to wet sand with 600 grit sandpaper by hand then buff on
a muslin wheel?
Tracy, yes that works, with the 600 on a stick, right? If you are
doing it by hand you don't need to work wet. You may find that the
amount of sanding you need to do will go through the stabilized area
down to something not as nice, it just depends on how it was
stabilized. The dark backing is probably Devcon which is commonly
used to back turquoise.
Let me know how it goes and if you have any other questions, let me