Ball and bar beads, alternating in a rhythm — a minimalist mixed-bead chain necklace that's more interesting than a plain chain, without trying too hard. Demi-Fine* 18K gold-plated stainless steel, waterproof and made for daily wear. 18K gold-plated stainless steel Alternating ball and cylinder bead chain Waterproof & anti-tarnish Hypoallergenic