Do not forget about the walls and ceilings in your interior design project. Give them some texture with free 3D plaster materials render-ready for Blender. And life will get better.
It is a symmetrical design element that consists of a symmetrical shape with four lobes or petals, resembling a stylized flower or a four-leaf clover. When used as a repeating pattern, as in the image you provided, the individual quatrefoil shapes interlock to form a continuous and ornate grid.