Obelisk

The "Obelisk" is a structure that held the corrupted Gem powering the Pyramid Temple.

Appearance
The obelisk is a large, upright rectangular prism with pyramids floating off of both ends. The top pyramid appears to have four faces on its sides. Three of the faces are frowning while the fourth one appears to be smiling. The bottom pyramid is divided into two pieces and has a triangle pattern on it. The obelisk's body has an abstract pattern on it that resembles a humanoid. The hands are designed to look like they are holding a gemstone that is embedded in the "chest" of the obelisk.

The gemstone is a table cut with a white color and reflective surface.

"Serious Steven"
The obelisk was found by the Crystal Gems, in a room filled with small spinning pyramids. They discovered that the gemstone in the obelisk was powering the mechanism in the temple that trapped them in never-ending rooms. Steven was thrown by Garnet to the obelisk to remove the gemstone. However, he couldn't move it until the obelisk's smiling face turned towards him. The gem then glowed yellow and was removed from the obelisk, throwing Steven to the floor. The pyramids and the obelisk then retreated into the gemstone, and the temple exploded.

Trivia

 * The name "obelisk" was given in its model sheet.
 * With its anthropomorphic design, the obelisk can be compared to a stele, which were funerary or commemorative monuments built by several ancient cultures.
 * The gemstone in the Obelisk has a similar cut to Yellow Diamond's.
 * Have a big similar with the mysterious gem in the episode It Could've Been Great