Giant-Heart Garnet

 is an item in Outward.

Description
"Large mineralized heart of an Ash Giant."

Uses

 * Helen Turnbull in Cierzo will initially buy this item for 30.
 * After learning its true worth from the Giants' Village, you can increase the price to 50.
 * It can help you during the peace negotiations with Highlord Cyr during Ash Giants, a Blue Chamber faction quest
 * In The Three Brothers DLC, used to obtain the artifact halberd Duty