'Martian shells' are fantastic seashells from the surface of the Red planet, once full of life. Depending on species, age and finding location they can have various pigmentation and degree of preservation.
3D printing technology nowadays lets us create this fascinating, exclusive decoration element here, on Earth, in all its pristine glory. And then just place it on our mantelpiece.
You can use it as an incredible accent in your interior visualization or print it with full-colour 3D printing and then apply it in interior decorating.