The contrast here is not black and white but very dark purple (the stone chips are amethysts) and crystals beads with light cutting facets. Ok, light isn't cut. It's refracted by the facets and the aurora borealis finish on the larger beads.

The dangle is a bit under an inch long. The earwires are a sweet purple niobium. (Niobium is hypoallergenic!) Headpins carrying the beads are sterling silver.