Heart scarabs enabled their owners to enter heaven1. Most are in various stones and are inscribed. They are of Dynasty 13 onwards
Red jasper H 6.9, W 4.9, H 3.0 Middle Kingdom Dynasty 13 © 2019 Musée du Louvre/Antiquités égyptiennes #N 2780 C
Red jasper H 8.1, W 5.3, H 3.1 Third Intermediate Period Dynasty 21-22 © 2019 Musée du Louvre/Antiquités égyptiennes #N 2780 A
Reference
1Andrews C. Amulets of Ancient Egypt, 1994, pp. 56-59, Figs. 56b, 57, 63d,e,f