Not all dice are the same
One might believe that all dice look the same. Indeed, here, the dice faces add up to 7, and their direction is the same. Or not. In this image, there is a distinct yet small difference that leaves one cube odd one out.
We want to break the myth that all dice are the same. The model depends on the factory that makes them and their needed design and function. According to various board games, there are different sizes, colors, and shapes of dice.