These flowers are made with high quality latex free rubber rings and aluminum rings. These folded over rings secured with little aluminum rings makes for some very pretty little flowers, Sometimes with thicker rings, sometimes thinner rings, and either loose with fewer rings or more snug with more rings, there's a lot of variation. 

These flowers have contrasting inner rubber rings! Whether this technique is used more to replicate a real flower or just to have fun with color, these are not earrings to ignore.