Test items and levels are:

Amateur (0-10) Shell Ring
Recruit (11-20) Bone Ring
Initiate (21-30) Beetle Earring
Novice (31-40) Horn Ring
Apprentice (41-50) Carapace Gorget
Journeyman (51-60) Astragalos
Craftsman (61-70) Bone Patas
Artisan (71-80) Coral Hairpin
Adept (81-90) Coral Bangles
Veteran (91-100)

Guildworker's Union Representative: Samigo-Pormigo

Skill items are:

Signing Crystals - 200 GP - Must have reached level 28 at leasst to purchase.
Boneworker's Belt - 10,000 GP - Must have reached level 48? at least to purchase. Gives Sysnthesis support.
Protective Spectacles - 70,000 GP - Must have reached level 48 at least to purchase.
Boneworker's Apron - 100,000 GP - Must have reached level 68 at least to purchase.
Drogaroga's Fang (furnature) - 150,000 GP - Must have reached level 88 at least to purchase. This enormous fang is said to have come from the Heavenly Dragon itself.

Key items are:

Filing - 10,000 GP - Must have reached level 28 to purchase. This special bonecraft ability allows you to work bone with a shagreen file, making it easier to process more arrowheads with one crystal.
Bone Ensorcellment - 40,000 GP - Must have reached level 28 to purchase. This special bonecraft ability allows you to enchant bones and shells with the power of black magic.
Bone Purification - 40,000 GP - Must have reached level 28 to purchase. This special bonecraft ability allows you to enchant bones and shells with the power of white magic.