You will be on the hunt for different items in Pokémon Brilliant Diamond and Brilliant Pearl. Dragon Scale is an essential evolutionary element you want to find to evolve your Pokémon into their final form. You will use it to evolve Seadra into Kingdra. In this guide, we will share with you where you can find a dragon scale in Pokémon Brilliant Diamond and Brilliant Pearl.
You will not find dragon scale in nature. Instead, you'll need to catch Pokémon and hope they've equipped it when you catch them. The most famous Pokémon with this item are Seadra and Dratini. Seadras are easier to encounter as you can typically encounter them while fishing on Route 226 with a good rod, or you can find Seadra in the Grand Underground once the National PokéDex is unlocked. For Dratini, you can find them in the Grand Underground when you complete the National PokéDex.
Due to the low likelihood of these Pokémon having Dragon Scale on them, they can be tricky to hunt in Pokémon Brilliant Diamond and Brilliant Pearl. Your best bet is to explore the Grand Underground and farm them there. You can use the Water-type Pokémon Statues in your Secret Base to focus on Horsea or use the Dragon-type Statues for Dratini.