Nymph's Tear

Nymph's Tear is a component required to let Cespenar make the Heartwood Ring. It's not known where this item can be gained. This item appears in Baldur's Gate II: Throne of Bhaal and Baldur's Gate II: Enhanced Edition.

In-game description
"Legend holds that Nymphs who die of a broken heart shed crystal tears. This rare gem is as hauntingly beautiful as its name, and lends creedence to the folklore by evoking sorrow and longing in all who view its solitary perfection."