Black pearls are hidden in locations as regular hidden objects. You can only find one pearl per search, and they can't be found with Seeker's tools.
![](https://d2duuy9yo5pldo.cloudfront.net/mytona/19e2cecc-b1ca-4ddd-b330-96d721b8a14d-2t.png)
Pearls are not on the list of items you need to find, so if you find a pearl after finding all of the hidden objects, it won't count. You also have to complete the location successfully in order for a pearl you have found to count.
The pearls you collect aren't displayed in the Inventory, they go straight to the counter in the Guardian Quests window.
![](https://d2duuy9yo5pldo.cloudfront.net/mytona/19e2cecc-b1ca-4ddd-b330-96d721b8a14d-2t.png)
Pearls are not on the list of items you need to find, so if you find a pearl after finding all of the hidden objects, it won't count. You also have to complete the location successfully in order for a pearl you have found to count.
The pearls you collect aren't displayed in the Inventory, they go straight to the counter in the Guardian Quests window.