Some Pokémon in the Pokémon games will need specific items to evolve in their evolutions. The Twilight Stone is one such item, and you can find it in Pokémon Brilliant Diamond and Brilliant Pearl. However, there is a specific way you will need to find this item. Here's what you need to know about how to find a Twilight Stone in Pokémon Brilliant Diamond and Brilliant Pearl.
You will be able to acquire the Dusk Stone by catching a Pokémon that has the Pickup Ability. The Pickup Ability is a unique Ability that, while exploring, your Pokémon will randomly grab items as they progress through the game. For us, we were able to catch a Pachirisu that had this ability, and while we were exploring the game, he captured it for us.
Once you have removed the item from the Pokémon, you will need to remove it from them to ensure that they can continue to collect other items during your adventure. You will also be able to find the Dusk Stone by finding it in the Wayward Cave, the Galactic Warehouse, and on Victory Road. Still, the Pickup skill is the best way to consistently acquire more Dusk Stones throughout your adventure, but it can be hard to predict because it's random.