I admired a woman's ring that had what looked like a princess cut diamond set flush against a trillion cut, except it was one single gemstone. I thought it was a marquise at first because it did have the curved edges, but one end opposite the point had a straight edge. It was basically a boat shape. I've been trying to find a faceting diagram for such a shape but I can't find one anywhere. This woman seems to pride herself on the uniqueness so it seemed like a good challenge for me to try to cut one! I'm completely a novice but am not afraid to give something new a try.
Any suggestions on where I might find such a cutting diagram?