I was thinking more o the anti-tones repelling its equivalent Investiture. So getting Ettmetal in liquid form (gaseous may work too, I guess) and using either Ruin's or Preservation's anti-tone to repel that. For example, using Ruin's anti-tone to repel Ruin's investiture would leave us with Preservation's Investiture, which (through some method) would be returned to solid form, so there you have Lerasium. And you would also have Ruin's Investiture alone to make Atium