schiller

noun

a peculiar bronzelike luster in certain minerals, often iridescent, caused by the diffraction of light in embedded crystals

Etymology: Ger, color play < schillern, to change color, akin to schielen, to blink, squint < OHG scelah, oblique < IE base *(s)kel-, crooked > scolex

Schiller, (Johann Christoph) Friedrich von (frē′driH fō̂n) 1759-1805; Ger. dramatist & poet