From LSWiki

Class: Craft Skills
Attribute: Intellect
Pedagogy: Procedural
Practitioner Term: Alchemist

The knowledge of physical substances, their properties, forms, and essences, and how they may be combined, separated, and otherwise
manipulated.

Trainers

Trainers: 
Darkhold: Helborg
Leah's Hill: Eldrinn
Association required:
Guild required:
Ordo Ignis Aeternis: Pierce
Ordo Ignis Aeternis: Flizera
Ordo Ignis Aeternis: Itozuma
Quest required:
Kolond: Gwalin