It gets a bit confusing because the terms are so similar but you will need a full:
Level 1 full set of Runes + goods to unlock
LvL 2-5 require Relics to unlock
Level 6 req. Full set of Runes + goods
LvL 7-10 req. Relics
You get goods from your manufactories. You get a Relic every time you win a fight or negotiate. You get a Rune when you complete a territory. When you place the Rune it will either go in a slot or break into smaller pieces. unfortunately they called whole runes and the broken bits "shards" which just adds to the confusion. If you get 9 broken Shards they will count as 1 Rune which will go into an open slot without breaking.
It is likely that additional levels will be added at some point in the future which will have similar requirements for unlocking.
Rune/Shard
View attachment 400
Relic
View attachment 401
Goods
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https://us.wiki.elvenar.com/index.php?title=Ancient_Wonders_Overview#Human_Ancient_Wonders