Farming Routes for the Jadeite Veins in The Echoval Wilds. They drop Chunks of Pure Jade.
You can toggle them in the GW2TacO / BlishHUD menu -> Tekkit's Guides -> Expansions -> End of Dragons -> Dragon's End -> Jadeite Veins. If you don't see these routes in the game, double-check if you properly followed Installation Instructions. If you still have issues, let me know in the #all-in-one-issues channel on our Discord