margarito-

Referring to something which has a silky iridescence as that of a pearl: Mike gave his fiancee margaritaceous earrings which were quite pearly, glossy-white. and had light blue reflections.

Pearls before swine.

[Don't throw] pearls before swine. Based on the verse found in the Bible; Matthew 7:6 in which it is written: "Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you" [tear you into pieces].

A caution against offering the uncultured anything of quality; or, a caution against presenting anything to those who have no appreciation for the value of the product that has been created.

1. Divination with pearls, usually by either casting pearls or studying pearls in oysters: One ancient use of margaritomancy involved throwing a pearl into a cast iron pot sitting in a fire and watching it to determine a person's guilt or innocence in a crime. If the pearl started to move, then the person was believed to be guilty. If it stayed in place, then he or she was not guilty.
2. Etymology: from the Latin margarita, "pearl".