Each block is made from 2 60* diamonds and an equilateral (60*) triangle. (plus seam allowance on each) Select your size, and cut with your ruler. what is special here is that by using 2 triangles, you have no Y seams and piece in columns. As with all building block quilts, the 3 d effect is achieved using 3 values of fabric. Generally, the light is on the top (triangle) and the medium and dark are in the same relative position throughout the quilt.