Square cut gem stone

[redlum]

Can anyone help me with making a square cut gemstone? I see the gem stone primitive and it looks super cool, but I have a request for a square cut stone. Is there a special setting in the numeric pallet that I'm missing? All suggestions are greatly appreciated. Thanks.

[Silkrooster]

In the numeric panel change the symetry to 4 and adjust the table for the size of the square.
Silk