Great work on the game, Impressive in the time frame.
I have a few pointers if you want to develop the game further. The stairs at points were hard to traverse, just a bit buggy (IDK the fix). I really like the creativity in the plot, if you were to expand it would be cool to see where the story goes. you could add a glow to the gem slots, something small but would help a lot with efficiency. The looping animation could be restricted to a certain amount of time so that it doesn't drag on if you did some exploring. Also the hourglass could be placed on a pedestal so that it doesn't take up the screen for the rest of the game.
Despite this the game is still really fun and I look forward to seeing you in next years Jam.