Extracted Phlogiston Development Materials A medium material used for Weapon Ascension and Skill Upgrade for Pistols Resonators.

A crystal shaped like a solidified candle flame. Its impurities are significantly reduced through a rough extraction and recrystallization process. This makes it simple even for those without expertise to distinguish between crystals of varying quality.
Sources
Forgery Challenge: Abyss of Confession
Synthesis - Purification
Synthesis - Conversion
Forgery Challenge: Marigold Woods