Small size, just under 5/8” height. Near flat section in the fully developed form. Made by the open face mold technique. It is said that Hrungnir, with whom Thor dueled (assisted by a sorceress), had a heart of stone. For Vikings the heart stood for bravery, fortitude, loyalty, integrity, all attributes of the warrior. Professionally refurbished with silver overlay restored on modern sterling silver neck chain. Gift boxed with a certificate of authenticity. Charming.