Book of Esoteric Revelations is a Fontaine quest in Genshin Impact ... Teleport Waypoint in the Beryl Region within Fontaine and head south a little. You should see a cave. Enter it.

Powered by The Beryl Conch is a One Star Local Specialty (Fontaine) Material found in Genshin Impact. A conch-like structure that gives off a faint glow. Despite the name, it is not a shell but ...