Definitions for "Iridescent"
Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic; as, iridescent glass. See iridescence.
A display of lustrous rainbow-like colors. The colors seen in an oil slick or mother of pearl are good examples of iridescence. Synonymous with "Pearlescent".
A shimmery effect best known in pearl and opal in which different colors are visible depending on how the light strikes the material.
said of an object coated with an iridium treatment. Important: iridium coated visors are rarely approved and are unsuitable for night use.
Keywords:  brb, flakes, buried, reacts, decay
Decay occurring where a buried piece of glass reacts with the soil conditions and flakes form and come away ( Find 134 BRB99).
Having both reflected and refracted light creating a visual effect.