Mighty Tiny Dice - Yin & Yang, Legendary black & White half and half 2-layered dice. Halfsies Dice Style. Mighty Tiny Dice are premium resin (not acrylic) 12mm mini dice that are heavier, denser, and better balanced that any mini dice set in the past. These dice come shipped in a clamshell with a hangtag. Each die is about the size of a penny! These Yin & Yang dice come to you in a two-tone coloring of black and white. Get rolling with the world's first miniature resin dice! That are perfectly balanced! At only 12mm, that's one mighty and tiny Die!