A special jewel from the Coral Highlands. Bears a metallic sheen.
How to get Platinum Pearl
This item can be obtained by finding the unique gathering point spawning only during "Upsurge: Pearl Oysters" in the Coral Highlands. Gathering it for the first time will unlock the Hot Heart ingredient at the Canteen.
Climb it and look for a small platform behind you with the item and two devil's blight on it, align yourself with it, and jump to reach it: