Shells veneer look for building blocks

[SongOfRuth]

We're all familiar (IRL) with stucco surfaces on building exteriors, as well as stone and brick. I have also seen (IRL) shells and smaller (river?) stones set in a mortar base. The result is now sometimes achieved with a veneer-type application. Wouldn't it be cool if we could collect all these shells in VS and mix them with stone/clay and create a shell surface for at least cube building blocks? I really like the little shells found on beaches and sandy places. It would be cool to use them as a decorative building material.