Assertion: gastropod's shell | /r/ObjectUse | used as a source of mother of pearl
Facets:
Source sentences:
text: The shells of a few species of large sea snails within the Vetigastropoda have a thick layer of nacre and have been used as a source of mother of pearl.
text: The meat (foot muscle) of abalone is used for food, and the shells of abalone are used as decorative items and as a source of mother of pearl for jewelry, buttons, buckles, and inlay.