I doubt that anyone will have a perfect answer for this but I’ll ask anyway. I purchased an awesome piece of Spanish Sphalerite, one of my favorite stones to cut, It is large nice red/orange color and super clean. I could cut a round stone about 25mm in diameter and I believe it would make an awesome collector stone or I could cut several smaller stones. I would like to sell it/them after cutting so what would you do??? I value your opinions.
If you are going to sell it then the question is will one big stone sell for more than 3 smaller stones. Without seeing the rough I can’t say what the best way to go is. If you cut it into 3 pieces then you are likely to lose more weight on your finished product.