Amber Tear

"An amber liquid that sparkles like crystal-clear tears, rumored to be the most precious of even the rarest treasures. When held by the team leader, it is easier to recruit defeated Pokémon to the team."

In-game description

The Amber Tear, like the Golden Mask, is a held item that increases recruitment by +24% when held by the team leader. It may be found in Zero Isle West, floor 40.