Besides some of the crystals, I am having a hard time finding a use for my multiple copies of artifacts or other types of minerals.
Will I ever find a use for my left over artifacts or minerals after I donated the first one to the Museum?
Stardew Valley – Handling Multiple Copies of Artifacts or Minerals
stardew-valley
Related Solutions
This image shows the new 8 tile "radius" of the scarecrow. It looks like a square with the corners missing.
Cross-referencing the Crafting and Minerals pages of the Stardew Valley Wiki, the minerals that can be used in crafting are:
- Aquamarine (Marble Brazier)
- Diamond (Ring of Yoba)
- Quartz (refined quartz for numerous recipes)
- Fire Quartz (Slime Egg Press)
- Frozen Tear (Warrior Ring)
- Earth Crystal (Mayonnaise Machine, Sturdy Ring)
- Marble (Marble Brazier)
- Coal (20 crafting recipes, use in furnace for refining ore and quartz)
- Copper Ore (Cherry Bomb, Flute Block, Drum Block, Furnace, copper bars for numerous recipes)
- Iron Ore (Bomb, iron bars for numerous recipes)
- Gold Ore (Mega Bomb, gold bars for numerous recipes)
- Iridium Ore (iridium bars for numerous recipes)
Artifacts seem to have very little use in any crafting. According to the Artifacts page:
Artifacts aside from the Ancient Seed are not used for Crafting or requested by Villagers for quests.
Minerals can also be used for Bundles in the community center:
- Aquamarine (Dye Bundle)
- Quartz (Geologist's Bundle)
- Fire Quartz (Geologist's Bundle)
- Frozen Tear (Geologist's Bundle)
- Earth Crystal (Geologist's Bundle)
- Frozen Geode (Field Research Bundle)
- Copper/Iron/Gold Bar (Blacksmith's Bundle)
Related Topic
- Stardew Valley Guide – Where to Find All Artifacts
- Stardew Valley – How to Feed Crawdads to Cows
- Stardew Valley – How to Descend the Skull Cavern Quickly
- Stardew Valley – Do Conversations with Townspeople Need to Be Finished for Full Friendship Points?
- Stardew Valley – Is Any Content Permanently Locked to a Specific Time Window
Best Answer
Duplicate artifacts and minerals can simply be sold or put into your delivery box to make extra money. As mentioned in the comments, the minerals may also be used as gifts for villagers or as materials for crafting. A limited selection of artifacts are also good gifts for select villagers. Aside from these uses, they serve no other purposes once you've donated one to the museum.
To give you some examples, Abigail loves Amethysts, the Dwarf likes to receive dwarven artifacts as gifts (scrolls, helmet), and Earth Crystals are used in the recipe for Mayonnaise Machines. If you prefer to sell these items instead, artifacts and minerals are all worth a decent amount of gold (except for dwarven scrolls), and are a nice way to have some extra income.