Alexandrite
“A variety of dark matter that possesses light-altering properties.
— In-game description
Alexandrite is a catalyst required to upgrade Animus Zodiac Weapons into Novus Zodiac Weapon. It was introduced in Patch 2.28. Players will need 75 Alexandrites to upgrade each Animus weapon into Zodiac. Players will not lose Alexandrite for failed materia melds.
Acquisition
Purchase
| Vendor | Location / Coordinates | Section | Cost | Unlock req. |
|---|---|---|---|---|
| Hunt Billmaster | Ul'dah - Steps of Nald (8.1, 9.3) | Allied Seals (Other) |  50
|
Immortal Flames member |
| Hunt Billmaster | Limsa Lominsa Upper Decks (13.2, 12.5) | Allied Seals (Other) | 50
|
The Maelstrom member |
| Hunt Billmaster | New Gridania (9.7, 11.2) | Allied Seals (Other) | 50
|
Order of the Twin Adder member |
From Items
Notes
FATEs
Players can complete FATEs with their Animus, Novus or Nexus weapons equipped with a chance to obtain alexandrite. This is similar to Atma farming.
Mysterious Maps
Players can also complete Mysterious Maps to obtain Alexandrite. Each map awards 5 alexandrite. Failing the task will destroy the map.
Players can obtain the map by purchasing one for 
75 Allagan Tomestone of Poetics from Auriana.
Players can also obtain the map by completing the quest Morbid Motivation that requires the player to complete Level 50/60 Roulette. Each quest awards a map. The quest resets daily.
The Hunt
Alexandrite costs 50 Allied Seals each.