Want this question answered?
maybe yes
yes because it is not a common mineral and it is found deep underground
Yes, they are.
yes. oil is mainly found underground.
Yes
Yes. Really, really deep though!
Yes, diamonds can be found underground. In fact, most diamonds are mined from the earth.
Yes.
Yes
Yes
Yes, usually gold is mined in underground mines. Gold can be found on the surface where it has been exposed by erosion and in river sediments.
Yes indeed there are many. The silicate gems for example, emeralds, rubies, beryl and so on. Diamond may be the exception, as it is found in volcanic pipes where it had been created under great pressure deep underground.