1) Bright 2) Colorful 3) Having a milky iridescence 4) Iridescent 5) Like a girasol 6) Like moonstones 7) Like Tiffany glass 8) Milky white 9) Nacreous 10) Opaline 11) Pearlescent 12) Showing a play of colors 1) Bright 2) Milky 3) Opaline 4) Pearlescent 
• (a.) Reflecting a milky or pearly light from the interior; having an opaline play of colors.
showing a milky iridescence, like an opal.
Showing a milky iridescence, like an opal. ... (18 Nov 1997) ... 
(o″pәl-es´әnt) showing a milky iridescence, like an opal.
Effect seen in a few minerals, chiefly opal (hence its name) which cause it to exhibit a glimmer of different colors when rotated or seen in different angles. Opalescent describes mineral exhibiting this effect.
O`pal·es'cent adjective Reflecting a milky or pearly light from the interior; having an opaline play of colors. 
Type: Term Pronunciation: ō-pă-les′ent Definitions: 1. Resembling an opal in the display of various colors; denoting certain bacterial cultures.
Opalescent is a variety of apple.
exhibiting a play of colors like that of the opal. · having a milky iridescence.
[SAT terms] having a play of lustrous rainbow colors