Definitely would like to see this expanded upon a little. A good premise. Easy little escape room.
Would be nice to get a proper "reset" button, rather than being forced to completely quit the game and load it all up again.
Tried to play this on a lower end PC. Even on the lowest settings it couldn't handle it well.
There are only 2 glaring issues I have. First is that two of the pieces can be very difficult to find due to physics. Second is that the sand blocking the last portion is still something you can walk through, it should probably get some proper collision to prevent the player from submerging themselves in sand. Easy enough to get out, but still annoying, especially since I've found some rogue pieces in that area.
EDIT: Found a little more to explore. Trying to puzzle it out now. Although in the meanwhile, I did find a bug that might be worth correcting.
After solving the main puzzle, you can use the other two gems to boost yourself further. However, putting one gem into a spot you've already maxed out will leave the gem locked in the socket, unable to be removed.