You can pretty much CTRL+ALT+CLICK any rich-supporting thing into chat (like locations, trains, stations,...).
However, for items and armor you can only SHIFT+CLICK it into chat (with chat opened); CTRL+ALT+CLICK won't work on them.
Feels like an oversight to me.
[0.17.3] Can not CTRL+ALT+Click items & armor
Re: [0.17.3] Can not CTRL+ALT+Click items & armor
Ctrl-Alt-click is for pinging the map, which only makes sense for items that are actually on the map.
Re: [0.17.3] Can not CTRL+ALT+Click items & armor
From my point of view CTRL+ALT+Click is to ping anything directly to chat, and SHIFT+Click is to ping anything to inline chat.
Re: [0.17.3] Can not CTRL+ALT+Click items & armor
The binding explicitly says "Ping a map location".