Problems with loft and boolean in a faceted object

 From:  gunter511
11451.1 
Hi All,

I'm making this faceted gemstone with a somewhat unusual shape. I'm not happy with the way the geometric section lofts to the more rounded section:



I was wondering if there's another option to lofting?

Also, after the loft, I can't seem to boolean the two joined sections:



Clearly I'm doing something wrong.

Any help is much appreciated!
Gunter

EDITED: 18 Jul 2024 by GUNTER511