When you enter, pick up a Sapphire on the left.

On the 2nd screen pick up an Ether on the left.

In the square, speak to the little girl to get the Alexandria. Pick up 365 gil in front of the weapons shop, an Amethyst in the lower left, and a Remedy in the lower right.

Pick up a Tent in front of the bell tower.

Go north to the ferry dock. Pick up a Topaz on the left steps and 4832 gil on the right.

After riding the boat across to the castle, pick up a Peridot behind the fountain and a Sapphire at the top.