The Opal escence is a result of the a small amount of water trapped inside the stone in which rows and rows of tiny spheres of silicon dioxide are arranged, diffracting light in a unique fashion.
The Romans wore opals for and considered them a symbol of hope and purity while for the early Greeks they embodied the powers of foresight and prophecy. The Arabs believe that Opals fall from heaven in flashes of lightning and thus achieve their unique play of color or "opalescence".
Opal helps those who use it to see possibilities.
Clarifies by amplifying and mirroring feelings, buried emotions, desires (including love and passion).