The quartz glass surface has become similar to frosted glass after washing with hydrofluoric acid. If I can restore the transparency, I will use it as a perspective mirror
Using a rotating wool felt, with cerium oxide polishing powder, and slowly grinding, it can be polished.
. Polishing is OK, of course, look at your glass, how big, small, it's better to buy another piece
Your quartz glass surface has been corroded by hydrofluoric acid, and it is not clear whether it will recover
