Symbolism plays a very important role in this story:

The Sky and Pirate

It’s a symbol of Freedom.

The Ring left by Rasler

(and the Ring left by Reks) stand for the past Ashe (and Vaan) could not forgot. Balthier took Rasler's ring away from Ashe as a compensation and turn it back when "finding something more valuable" stand for the leitmotiv of the story - "Free from the hatred and leave the past behind". Although the translation in North American version is not exactly right compare to the Japanese Version (in the originally version it doesnot define "who find the more valuble things"). But it still a wise Ending at last when the ring turn back to Ashe's hands. one side it means Balthier still alive, in the other side we all have found the real freedom far more better than the hatred and the past, don't you?

Galbana Lily

Galbana Lily is a kind of flower bloom in the Dalmasca Desert. Because of the bad weather, it is rare to see one blooms in the sandstorm. Is there any other meaning behind?

1. Galbana Lily is one of Rek’s favorites, Vaan just found one for his dead brother in the beginning of the story. But this one was soon trampled by the Imperial Chocobo.
2. When crossing the Sandsea, Ashe and Vaan met the a Urutan – Yensa who is looking for help. Although with the help of human the Urutan – Yensa defeated their enemy, but their Queen still punished the one who looking for help to death. Instead a flower bloom in the Sandsea which is just like the one Vaan found in Dalmasca Estersand.
3. Mt Bur-Omisace, Al-cid
   To think I stand before the Lady Ashe. It is truly an honor. I see it is true after all. Ah, stunning is Dalmasca’s desert bloom.

These things all lived in rugged environment. They have to face sandstorm, natural enemy or the Empire.

Maybe Galbana Lily just used to hit Dalmascans under the domination of the Empire. Only one or two can bloom in such a bad condition just like the one bloom after the Urutan – Yensa dead, because he find the Sandsea’s treasure? Or he left the racial hatred behind for human’s help? There are too much question left to the user themselves.

The Sun-cryst

Neithicite just like a mirror reflect the desires of human and make a illusion in front of the one who desires. The Sun-cryst is the mother of Neithicites, maybe we can see more than our lust.
In Japanese version, The Sun-cryst use the name of 天陽の繭 ”, it means “sun cocoon” in English. On the top of the Pharos we saw the Sun-cryst just like a huge Nethicitewith innumerable filament around.

In Chinese, there is a idiom called “作茧自缚” to describe those who get caught in one's own trap. Just like the filament bind around the cocoon which spins by the silkworm itself. “Bind somebody by oneself” just like what Ashe did in the story – the past and hatred band her tightly, band the one who desires for the Nethicite and the Nethicite desires. The only way a butterfly can be free is to cut the filament herself. Maybe when Ashe and the Sun-cryst face to face, she knew what she should do.

The Sword of Kings and the Treaty-Blade

Ashe held two blades in her hand when she reached the top of the Pharos. One is the Sword of Kings which is found to destroy the power of Neithicite, another one is the Treaty-Blade which is Occurian gave Ashe to against the Empire and their Manufacted nethicites. They were hint to the different choice Ashe faced. When Gabranth appeared and told Ashe what he did in the past, the blaze of revenge flamed again in Ashe’s mind. She threw off the Sword of Kings then grasp the Treaty-Blade tightly. But the words of Raddas and the reaction of Vaan put out the fire of revenge. Ashe finally cut the illusion and dropped the Treaty- Blade.