About this paper
Diamond graph paper
Diamond paper uses two families of lines, at 30° and 150° from horizontal. They form rhombuses with 60° and 120° corners, wider than they are tall: the isometric grid with its vertical lines taken out.
The spacing sets the side length of each diamond. Every diamond is made of two equilateral triangles, so designs line up with isometric and triangle paper. Turn the sheet sideways for tall diamonds.