Shell-shaped decorative objects were very popular during the 19th century. There were trinket boxes covered in tiny shells, counter bells made with several mother-of-pearl shells put together into ...

These are roughly spherical, ovoid or egg-shaped ... of mother-of-pearl. The nacre is made of chemicals secreted by the same kind of cells responsible for making the mollusc’s shell.

Learn about how mollusks create these shiny gems and how that biological process could change as Earth’s waters warm Abigail Eisenstadt Smooth pearls in the shape ... mother of pearl or shell ...

All the buttons on our shirts are made from finest quality Australian deep shell mother of pearl, not the flimsy shard-like splinters used by so many other Shirtmakers,' they write on their site.