Peacock Blue Luster Dust 2 grams Cake Decorating Dust DP-17 Cake Decorating Dusts / Peacock Blue Luster Dust 2 grams FREE SHIPPING Luster Dust finishes your project with a bright sheen and glittery metallic look. Luster Dust contains only ingredients that are non-toxic and are ideal for use with gum paste or rolled fondant. Intended for use in the dry form, Luster Dust can also be mixed with oil-based flavorings or alcohol for painting and highlighting.