Diamond is a rare mineral in Stardew Valley.

A Lost Book which can be found in the library, "A Study on Diamond Yields", states diamond deposits begin appearing with a 1/500 chance at Level 50 in the mines and increase in frequency by .000016 per level.

What Makes Diamonds Useful?

  • Can be Donated to the Museum
  • Can be a Gift (many villagers like diamonds) See Here; Gift Giving
  • Can be requested by villager(s) as a quest
  • Can be sold through your crate for 750 G