It appears to me that PC 10.037 Tri-Heart, Strickland, Robert W: TFG Newsletter, Oct 93, v14n4p23 would be very close.
Assuming you have GemCad, you could easily modify the 48 index into a split 46-50 index to make it a plump pear instead of a Heart. The facet arrangement also looks very close to your picture.
You would also want to lightly freewheel your index gear along the girdle line to obtain the rounded effect as in the picture. That would give your girdle a “scalloped” look from the sides, but that would be accurate from your picture.
If you do not have GemCad, then you need to get creative on your machine.
Enjoy the fun of modification.