Electrum Moiré

Two families of rings: gold sources weighted 0.79, silver sources weighted 0.21. Where their waves meet, a moiré of a third metal appears that neither family drew. Drag to move the silver source; click for a new seed.
LIT electrum is a natural gold–silver alloy. MODEL Dave's 79/21 ring. ANALOGY rings as waves.← SaPpH{{i}}on