Goblin Silo
From Miners Settlement - Game Wiki
The Goblin Silo is one of the buildings the player can build early on in the game. Once it is built, the NPC Goblin Nil will allow players to trade unwanted inventory items for red shards here. He also has the Goblin Market, a button on the bottom of the Goblin Silo screen will allow the player to enter the Goblin Market. Here you can purchase scheme pieces for tier-1 through tier-4 weapons and shields. Each tier-1 piece costs 50 gems, tier-2 cost 80, tier-3 are 200, and tier-4 pieces are 500.
Helpful side note- most players recommend selling unused pets here, to save inventory space and get extra red shards!
Created by Drizzt