Yes you can order them in RX here: https://www.opticsplanet.com/s/ao-original-pilot
We do not recommend altering/modifying products in any way as it will void any warranty.
Yes, we carry the 52mm frames in a silver color here: https://www.opticsplanet.com/ao-original-pilot-2-sunglasses.html
Yes, AO does make these with polarized lenses, like these: https://www.opticsplanet.com/ao-original-pilot-sunglasses-polarized.html
No, these are not 23K gold.
Yes, these frames are as high quality as prescription frames, and there are two screws that attach the temple piece for the frame.
This one comes in 55mm the code is AO-USG-OPSB-S-TCGPG-BNT-55 if you look up our site.
Polarized lens help filter light out from glares while non polarized lens does not filter that light. And its much more noticeable.
The difference is how dark of lens you want and then also the color frame that comes with them.
Unfortunately we are not able to install new lenses.