Sanding sugar

Sanding sugar is a large crystal sugar used as an edible decoration that will not dissolve when subjected to heat. Also called pearl sugar or decorating sugar, sanding sugar adds "sparkle" to cookies, baked goods and candies. The sparkling affect is achieved because the sugar crystal grains are large and reflect light.

Sanding sugar is available at baking supply and some specialty stores./articles/detail/sanding-sugar

Coarse sugar (won't sparkle after heating but typically will hold its shape)