Geode

A blacksmith can break this open for you.
Overview
A Geode is a mineral deposit that can be broken open for minerals, artifacts, ores, or other basic resources. It is one of the most common collectible breakables in Stardew Valley and is found primarily by breaking rocks above ground and in the Mines, especially on floors 1–39. Geodes can also be dropped by Duggies, found in Fishing Treasure Chests, taken from the Garbage Can outside the Museum, received as a gift at the Feast of the Winter Star, or obtained by pickaxing Geode Nodes. A Stonefish Fish Pond can also produce Geodes once its population reaches 9. On the Beach Farm, 2–4 Geodes may occasionally appear in Supply Crates if the Farmhouse has not yet been upgraded. Geodes cannot be obtained from breaking rocks on Spring 1 of Year 1.
Geodes can be opened by 



Possible Geode rewards include a mix of minerals, artifacts, ores, and resources. Geode Minerals each have a 1/32 chance to appear, including 



















Geodes also have a few practical uses outside of simply being opened. They are used in the 




Because Geodes are so common, it is often efficient to save them up and open them in batches rather than carrying them around. Since the contents are predetermined, opening them later does not improve the result, but using a Geode Crusher can be convenient if you want to avoid paying Clint’s fee or if you want to process them in bulk.
Official description
A blacksmith can break this open for you.