Nacre is a material also known as "mother-of" what other gemstone?

Nacre is a material found on the inner layer of many mollusc shells. Better known as "mother-of-pearl", the sheen of the material is a pearlescent shimmer which resembles the outside of a pearl gem. It is often used to make types of beads and to make buttons, as well as top the keys of many musical instruments.

Asked by Ben Jenkins · Last updated 2 years ago · 38.1K views