Abel could see different symbols on each of these five pillars. It was just like from the game. He could only open the teleportal portal to Tristram if he activated them in the right order. Thinking back to the scroll of Inifuss, he searched for the first pillar that he was supposed to touch.
Once he did, he took out a perfect red stone to put in. As the stone slowly sank into the pillar, the symbol that was correspondent to it began to glow in blue light.
The second, the third, and the fourth pillars were activated. Finally, when the last pillar was activated, all the pillars began to glow blue at the same time. The light became so bright that he had to take a few steps back while covering his eyes. Maybe it wasn't good to use perfect gemstones on these things, after all.