Mark,
Do you mean that in breeding ball pythons a lozenge refers to a diamond or a rhombus shape? Because a lozenge in other contextx is a just a flattish oval.
Genevieve, good luck with your eggs.
ETA-- apparently, the lozenge shape in parquetry and jewelry, etc is as you said Mark, with a sometimes definition of flattened oval. I did not know this.