After some relaxing, the Seekers of Knowledge received a gift from an anonymous person. The gift was a magical scroll case that had 12 gemstones on it. The Seekers were a bit shocked at the elegance of the scroll case as they knew it was very expensive.

There was a catch with it. They had no idea how to open it. As they looked over the scroll case with amazement, suddenly a magic mouth appeared before them and said, "The code to open this scroll case is hidden within the stones; you must press each stone in the proper order to open it." The magic faded out.

The stones are in this order on the scroll case: Turquoise, Diamond, Opal, Aquamarine, Topaz, Emerald, Moonstone, Garnet, Sapphire, Amethyst, Ruby, Peridot.

After some thought, they knew how to open the scroll case.
They pressed the stones in this order: Garnet, Amethyst, Aquamarine, Diamond, Emerald, Moonstone, Ruby, Peridot, Sapphire, Opal, Topaz, Turquoise.

They are all birthstones, and in the order of the months: January, February, March and so on.

Today's brain teaser courtesy of Braingle.com.