nacreous

adjective

1. of or relating to nacre.
2. resembling nacre; lustrous; pearly.

adjective

1. relating to or consisting of mother-of-pearl
2. having the lustre of mother-of-pearlnacreous minerals

adj.“resembling nacre,” 1807, from nacre + -ous. adj.

1. Resembling mother-of-pearl; lustrous.