So I figured this is needed. I know selectively what 1 tome is for lol and quite a few items but maybe newer players don't. Plus I want a list myself to know what I can safely sell without affecting my lg negatively so. Here we go.

Ancient codex of knowledge....primordial?
Can buy for 12k lg tokens or sell for 800 lg tokens

Ancient accessory clasp?
Can but for 12k lg tokens or sell for 4k lg tokens

Ancient Grove core?
Can buy for 2.4k lg tokens or sell for 600 lg tokens

Ancient tome of knowledge-unlocks stoneweave gear
Can buy for 1.2k lg tokens or sell for 200 lg tokens

[Design: Golden Legionnaire's Cape] guessing avvie item
Buy for 4k tokens and can't sell

Golden helm design: guessing avvie item
Buy for 4k lg tokens and can't sell

Quintessence of the Chosen One...no idea
Can't buy. Can sell for 4k lg tokens

Battle trinket
Buy for 120 sell for 40 lg tokens

Damaged manikin
Buy for 240 sell for 60 lg tokens

Ent log
Can't buy. Sell for 80 lg tokens

Glowing Chrystal
Buy for 320 sell for 80 lg tokens

Gold ore
Smelted into gold ingots for amor and avvie items
Buy for 192 sell for 64 lg tokens

Idol of Du'Vhal no idea
Buy for 320 sell for 80 lg tokens

Peerless rapier not sure besides barracks
Buy for 320 sell for 80 lg tokens

Radiant Crystalline Fragment not sure
Buy for 320 sell for 80 lg tokens

Aurleon feather
Used for the tracking
Buy for 25 sell for 5 lg tokens

Bulbori gem used for tracking
Buy for 25 sell for 5 lg tokens

Cultists trappings not sure
Buy for 25 sell for 5 lg tokens

Empty bottles traded for traps or elixirs
Buy for 8lg tokens