Does curvature "affect" luster, or the perception of?
I'm just wondering because I'm wearing this random button freshwater pearl ring which has pretty good luster, and compared to a high-grade full strand that's round and of the same size, it "appears" to have better luster with a clearer "mirror" effect. It got me wondering if it's the flattened surface. On a perfect sphere the reflected light is more diffused due to the ever changing curvature. Anyone care to confirm this?
Aspiring ninja. Go Storm Shadow!