Can xrays show up things on the outside of the body ie metal, stones?

Certainly they can and often do. Ask any radiographer. Small metal bead are often placed on the body where on earth they serve as 'landmarks' on Xray films - providing proper orientation of the exposed portrait to the body.
Even plastics image on Xray films and digital displays.
The density of the purpose determines how much the rays scatter or how truly they penetrate the intent. Flesh is less dense than bone to bones appear on picture more brilliantly than fats, tendons and muscles.
Xrays MAY, however, be diverted or 'focused through the use of quartz 'lenses'.
Stones? I know that necklaces, pins from previous broken bones, swallowed coins, unadulterated safety pins can be swallowed and show up within xrays, but outside STONES?
Ah Maybe you mean the stones dangling from a necklace .
Well, adjectives metal will show and are considered a mistake of the operator or xray technician because they interfere next to the picture. If you see those, then the technician did not do his work properly. He/SHe be supposed to drape a lead shield over you to save you from absorbing unnecessary radiation from xray, esp your thyroid.
Yes. You can't [or shouldn't be able to] smuggle metal and stones through airport payment without them mortal detected by x-ray.
anything not surrounded by lead will show up. head is used to block Xrays and if it is not blocking everything shows up.
x-rays are used extentsively by customs and forensic services to do just that.
yep, that's why you run off adjectives metal/jewellery/pins etc before your Xray
Very clearly especially body piercings. Even less dense things can show up on overexposed x-rays

mortgage rate

Electric Scooter