Cordierite

Cordierite is a mineral that is commonly of a blue color, although its color shifts depending on the angle it is observed from.

List of Cordierites

Note: The rarities listed are estimates and depend on the status of the treasure system in the area hunted. Average values listed are approximations and are generally taken from the sell values of a character selling gems with no trading bonus. See the Trading article for more information on variations of sell values.

Rarity:
Average value:
Location:

a blue cordierite

Description:   The unusual color of a blue cordierite could be compared to a light blue sapphire with a purplish tint. Sometimes called a "water sapphire," cordierite has an entrancing color-changing ability. When seen from one direction, the crystal is a clear blue-violet. But as it is rotated, the color changes first to yellowish-grey, then back towards light blue.