Some sentence examples which use the word 'iridescence'
For the culture of the Roman period there is abundant evidence from Salamis and Paphos, and from tombs everywhere, for the glass vessels which almost wholly supersede pottery are much sought for their (quite accidental) iridescence; not much else is found that is either characteristic or noteworthy; and little attention has been paid to the sequence of style.
Very much rarer iridescence is that of nacreous or mother-of-pearl clouds.
The common opal is often opaque and displays very little iridescence, where as the precious opal has many flashes of color.