mudbunny: the gems are all around the side of the column, about 6 inches from the top.
topographically it looks thusly:
......Y
......1
...3....2
..R.1..1.B
Nightson: no traps or manipulatable magic are found. the rest of your response baffles me.
mark:
the following occurs after each press:
Red: the die all slide along the surface of the dais counterclockwise, retaining the pentagon formation. they stop in the below position.
......Y
......2
...1....1
..R.3..1.B
Blue: the two die nearest the blue gem both tip and roll, now showing the "2" face.
......Y
......2
...1....2
..R.3..2.B
Red: they die slide along again, stopping thusly:
......Y
......2
...2....2
..R.1..3.B
Red: and again
......Y
......2
...2....3
..R.2..1.B
Yellow: the die nearest and the two die furthest from the yellow gem all rotate and tip, now showing the number higher than they had just shown:
......Y
......3
...2....3
..R.3..2.B