-Have a full animus weapon
-Do the quest Celestial Radiance. You will need 1500 myth tomes,
-Start the quest Star Light, Star Bright. Before you warp to North Shroud to continue the quest, buy the scroll for your weapon for the 3 ink you have. Clicking my scroll asked me to confirm paying "7879 Bottles" of the ink, but I clicked ok and it took my 3.
-Do the quest One Man's Trash, which unlocks a daily quest Morbid Motivation. The daily quest gets you a Mysterious Map.
-Mysterious Maps are unique, so you can only hold one at a time, you can also buy them for 800 myth tomes. They work the same way as gathered up timeworn maps, and drop one Alexandrite to the person who spawned the chest. The difficulty is between a Boarskin and a Peisteskin map; I took about 3 minutes take mine out as a ilvl98 BLM with choco out, there's a 5 minute limit.
-Use your scroll and use the Alexandrite and appropriate materia. It appears that you can do a tier I materia with 1 alexandrite, I assume it takes 3 for a tier III, etc. There is a chance of fail and losing both.
-After you have maxed out the scroll, you talk to the guy in North Shroud to finish it, which is weeks away for anyone.
Some Tips:
-Don't buy materia now, it's jacked up in price horribly and will drop sharply in a week.
-Spiritbond your own materia. Get a cluster of level 49 rings and wear one when you do your normal stuff. Once it spiritbonds, replace it with another. You will get the materia you want faster than you will get the Alexandrite to use it.
Edited, Jun 5th 2014 9:45pm by stouter