Not sure what the finish is meant to look like, but generally no shot blast or vapour honed finish will hide any marks. The coarser the finish the more you can get away with though.
So any marks will have to be polished out, especially as this will no doubt be a very fine finish using a glass bead.
This in itself can cause problems on a fully assembled bracelet as it is very difficult to get all the fine glass beads out. This would then act as a grinding paste. I am not sure if there are any tricks of the trade or the bracelet is fully disassembled for blasting.
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