Also maybe unfair to describe Denon 103 and 103 R stylus as simply conical. It is special Denon cut diamond - described as naked square cut. Under microscope it looks like it has been cut to a pyramid with the sharp apex of the pyramid being slightly rounded to sit in the record grooves. Conical diamonds look different under microscope, more rounded and much blunter.
Not sure what you’re looking at, but according to the Denon specs it is 16.5 μm diamond spherical tip = conical.
Yes, it is nude and very well polished