The Seer's Reach dungeon, situated in the Philios region of Skovos in Diablo 4, provides players with an optimal farming location for Royal Gems and other valuable crafting materials. To maximize efficiency, players should rush past mobs and target the Tormented Servant boss directly, which guarantees drops of 3 or more Royal Jewels and around 15 Forgotten Souls. Utilizing high mobility builds, such as the Whirlwind Barbarian or Teleport Sorcerer, allows players to complete runs in under a minute, particularly in Torment 1 difficulty. The high drop rate of Royal Gems is crucial for crafting, as players need 10,000 Fragments to create them. However, the dungeon's loot pool may face nerfs due to its current effectiveness in farming. Overall, Seer's Reach is a prime location for gathering essential endgame materials like Primordial Dust and Neath Iron.