No... "beautiful" is never a word I personally would use to describe any genitals or even a big sexy pair of titties. I personally however feel no romance when it comes to sexual in nature things....
Beauty and romance are more to me, the things that come before sex or dirty talk...the "high level thought" type things...
Sex however is sex to me, it is it's own spectrum of words, and feelings of a lower level of thought, more primal and driven by physical pleasure and pursuit of it. Real life isn't "soft core porn" or romance novels... the idea of "making love" makes me feel... repulsed for some reason. Gag'ish.... sex is fucking, making each other cum, blow their loads, squirt, and shake with pleasure and sexual fulfillment and physical ecstasy.
Sex is hott, cocks, pussy, and boobs are "suck'able... sexy... manly... lick'able...wet... juicy... etc." I would never call any of the above "pretty, beautiful, etc"....
The one and only word I have EVER caught myself using, and in this exact context is.... "Those are some cute little pointy nipples you've got!

" when coming across those petite little hotties with rock hard perky little nips like... piper perri, or kenzie reeves, or kimmy granger type chicks...."cute" is the one word of that other spectrum I've ever used. I just find that mushy-mushy stuff a total turn off when the sex fun part starts...
But that's just me. To each their own.