Nacreous

Na′cre-ous

(nā′krē̍-ŭs)

,

Adj.

[See

.]

(Zool.)

Consisting of, or resembling, nacre; pearly.

,

Adj.

[see Naker.] Having a pearly luster.

nacreous ‎(comparative more nacreous, superlative most nacreous)

Of, or resembling nacre (mother of pearl).
- 2001, Neil Gaiman, chapter 11, in American gods, Harper Collins, page 323:
  They are covered with a smooth, safe, nacreous layer to let them slip, pearllike, from our souls without real pain.
Exhibiting lustrous or rainbow-like colors.