Ceruleum Blue Dye

Ceruleum Blue Dye is a dye.

Source
Ceruleum Blue Dye can be purchased for 40 gil from the following vendors:
 * Unsynrael - Limsa Lominsa Lower Decks
 * Alaric - Old Gridania
 * Nanabe - Ul'dah - Steps of Thal
 * Frine - The Pillars
 * Tokohana - Kugane