At what spot does GIA measure width on a pear?

[SparkleFest]

I have spent way too much time this morning trying to find the answer to this. I have always assumed they measure across the widest section, but realize that I don't know that for a fact. Does anyone know? Thanks in advance.

 

[msop04]

I would think it would be measured at its widest point.

 

[Rockdiamond]

I would think it would be measured at its widest point.

DING DING DING DING
And you would be correct!
Widest point.

 

[SparkleFest]

Thanks yous! I always figured that was it, but...........assume, you know how that can go!