Definition of opalized in English:

opalized

Pronunciation /ˈəʊpəlʌɪzd/

adjective

(also opalised)
  • (Especially of a fossil) converted into opal, or a substance resembling opal; rendered opalescent.

Origin

Early 19th century; earliest use found in John Pinkerton (1758–1826), historian and poet. From opal + -ized.