Golden Diamond

The Golden Diamond is a special, equippable accessory item the New Teenager and Wendy Wu can receive from Nina Wu at Stardeer Coffee in Wendy Wu: Homecoming Warrior Kick-in Challenge. The item is the seventh (and final) gift they can receive from her after they create the final non-duplicate brew. When a Yin Warrior equips the item, the duo receives a rarer item after all enemies are defeated.

In-game description
''Defeat enemies and always get rare items! (Item Fiend)''