u/Adept-Detail2178

Soo, I tried it a couple of times, on paper it sounds good. Animation looks ok (like it actually does a lot), but every time I use it it does almost nothing, basically same as the normal swing. Sometimes I get lucky when mining low tier resources and it drops a couple of them, but for example for silver, last time I used it it dropped 1 or even 0 on use...

Is there any use for excess gems or I can keep on deleting them?

I am getting multiple copies of the same gem, there is only option to delete them.
Is there anything else that I am missing to turn them into any resource or deleting is the way?