Approximating an isosurface with a triangle mesh based on the pruned and optimized border of rhombohedrons is a valid and effective method for isosurface extraction when we have no other assumptions about the topology and the shape of the surface other than continuity. It generally produces a high-quality mesh, and the fidelity and the accuracy of the approximation are regulated by the element size and the iteration count for the optimization step of the algorithm. Having the second parameter adjustable is essential for isosurface construction methods research, as it allows us to get preliminary results quickly and accurate results eventually.