I found this wandering down the same road I was on as I was on my way home from language lessons. It glittered under the glow of a streetlamp.
Tessaratomidae family, or shield bugs because they are shaped like shields. It’s a large family with members all over the world. Stink bugs and harlequin bugs are members.
It is a shield bug, Mattiphus reflexus. It’s about an inch, I magnified it for most of these photos.
Shield bugs include four different families- some others are on this page.