Developers, charter stones need some attention. Right now there's too big gap between people who don't have charter stones and those who have. I think the fact that rock crystals are being sold for subtokens is bad sign, and then you added the option to gild rock crystals, increasing their demand even further.
If I was tasked with "fixing" this, I'd have two ideas.
1) Make Rock Crystal fated forageable, available on all mountains.
+simple(tm) no map wipe needed
-people who have claimed rock crystal nodes may rage
-could cause oversupply if people make enough alts that fill requirements to see crystals
2) Add rock crystal node on every mountain. Some of them will have crystals on them. When you gather crystal, it will respawn after a timer into a random mountain.
+retains certain sense of what current node system aimed for, especially if nodes would have some indicator that rock crystal is about to spawn.
-chance that map wipe is needed