The problem with Paua (Maori name for NZ abalone) shell is it forms very sharp edged particles when crushed or ground. so even embedded in a epoxy laminate i would expect the dust to be as dangerous, just a lesser proportion of shell and more of epoxy.
I've used paua a number of times to inlay in pandants and carvings. Wonderfull stuff, seeing a bright vivid colourful inset in a smooth clear expanse of white bone is an interestign contrast. especially when the shape of the inlay contributes to the flow and proportions of the work.
I've used paua a number of times to inlay in pandants and carvings. Wonderfull stuff, seeing a bright vivid colourful inset in a smooth clear expanse of white bone is an interestign contrast. especially when the shape of the inlay contributes to the flow and proportions of the work.