[What endgame mats to look out for?]

Ty I'm level 78 now and at 30 gold. I've been doing events all the story quests and hearts in between. Also cutting trees. Gathering herbs didn't seem to sell for anything good.

[What endgame mats to look out for?]

So I'm new to the game and my instinct is to auction everything. Any specific mats I should keep an eye out for to not sell for endgame. I play a mesmer so I instantly keep the cloth so I can become a tailor. I also have some kind of shards in my bag and stuff like black lion chests and keys/items from those that i am keeping