Stone dug out of huge mine (3)

I believe the answer is:

gem

I'm a little stuck... Click here to teach me more about this clue!

'stone dug' is the definition.
'gem' can be an answer for 'stone' (I've seen this in other clues). I am unsure of the 'dug' bit.

'out of huge mine' is the wordplay.
'out of' says the answer is hidden in the clue.
'GEM' is hidden within 'huge mine'.

Can you help me to learn more?

(Other definitions for gem that I've seen before include "Pearl" , "Emerald or sapphire, say" , "Kindness; comfort (German)" , "Valued person; jewel" , "Pleasant and cheerful (from German)" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.