schiller
Stone's inner glow
Schiller is a lustrous, metallic sheen that appears in certain minerals when light reflects off internal structures.
The effect is most commonly seen in feldspar varieties like moonstone and sunstone, where it creates a floating, billowy glow beneath the surface.
Mineralogists call this phenomenon schillerization. (Capitalized Schiller is the German poet and playwright.)
mineralogy
Soft reflected light
- sheenSoft surface luster
- iridescenceColor shift from interference
- feldsparSilicate mineral group
- moonstoneIridescent feldspar gemstone
sunstone · labradorite · optical effect · pearly · opalescence
luster
Soft reflected light
- sheenSoft surface luster
- iridescenceColor shift from interference
- feldsparSilicate mineral group
moonstone · sunstone · labradorite · optical effect · pearly · opalescence
- iridescenceoil slick, soap bubble, mother-of-pearl, nacre, opal
- crystal propertieshardness, luster, cleavage, fracture, streak
- rock texturescoarse-grained, fine-grained, grainy, gritty, massive