I have been studying the diagram and now understand that this design is really a misshapen-ed round by having a L/W of 1.001. The largest measuring points would be 24/72 which would be points or 96/48 with one flat and one point. Measuring from G5 would be another option but G5 does have an angle involved which would be harder to measure from accurately. It is important to get the size correct or face a large deduction. This design is going to be a challenge to cut, at least for me, with so many angle changes and is worthy of being a Grandmaster stone. I am not sure I will enter having taken a break from faceting for a number of years. Depends on how well by test cuts turn out.