It likely contains some visceral remains of Horestis. Use it to try destroying it. If you succeed, it will turn into The Remains of a Canopic Jar (Horestis) and you will see the Explosion Effect. If you don't, you'll have to wait an hour for another chance and you will see the Death Effect.
It looks the same as a Lapis-Crested Vase.
Tries to break, 49 trials.
||Tries to get 1