Crafting

Outermost Ring (Crafting Creed)
Starting at the One O'Clock and moving around clockwise, the runic reads: "Craftsmanship is Earned ~ Honed through Practice ~ Attebtion to Detail ~ Elegant and Functional ~ Refined and Durable" Note: The word Attention is spelled wrong in the runic original (likely a simple overlooked typo).

Large Text Inner Ring (Production)
Starting at the 12 O'Clock and moving around clockwise, the runic reads: "Blacksmithing ~ Carpentry ~ Tailoring ~ Alchemy ~ Cooking"

Inner Ring (Refining)
Starting at the 12 O'Clock and moving around counter-clockwise, the runic reads: "Smelting ~ Butchery ~ Tanning ~ Textiles ~ Milling"

Innermost Ring (Gathering)
Starting at the 12 O'Clock and moving around clockwise, the runic reads: "Mining ~ Lumberjack ~ Agriculture ~ Field Dressing ~ Forage" Note: Lumberjack on the sigil has been changed to Forestry in-game, and Forage on the sigil has been changed to Foraging in-game.

Rings
There are three rings of Crafting:

Each ring contains five different skills. The rings represent the paths required to make items. All crafting activities require tools. Refining and Production also require crafting tables and recipes in addition to tools.

Crafting skill trees have two skill types: Generalized (darker) and Specialized (lighter). Generalized skills affect things like quality, quantity, tool use, etc and they modify all the results of that particular crafting school. Specialized skills improve success chances for types of items. For ultra-high quality items the chances may be so low that specialized skills are required. Gathering and Refining skills are lumped into two schools that cover all the types of gathering and refining in those two schools. Production skills are divided out into individual schools of each Production type.