it is completely non-conductive. I'd guess that puts the resisitivity at 1
At least when I use my multimeter to see if something is conductice - it sets itself at 1 for zero conductivity. Pla is a solid 1 :-)

I've only just come across the term when researching electroforming.

But basically unmidified pla does not conduct electricity.
Hell the modified stuff does a really lousy job of it.

Is that what you mean ?