Buy Heartstone Poster
- AKA: Hjartasteinn, 同心石
- Country: Iceland
- IMDB Rating: 7.4
- Genres: Drama, Romance
- Release: 2016-09-01 (Italy) (Venice Film Festival), 2016-09-11 (Canada) (Toronto International Film Festival)
- Director: Guðmundur Arnar Guðmundsson
- Writers: Guðmundur Arnar Guðmundsson
- Language: Icelandic
- Stars: Baldur Einarsson , Blær Hinriksson , Diljá Valsdóttir , Katla Njálsdóttir
- Runtime: 129 min
- Awards: 35 wins & 19 nominations.
- Plot: A remote fishing village in Iceland. Teenage boys Thor and Christian experience a turbulent summer as one tries to win the heart of a girl while the other discovers new feelings toward his best friend. When summer ends and the harsh nature of Iceland takes back its rights, it's time to leave the playground and face adulthood.