Large Ritual Bags?
According to the Large Ritual Bag page, these things don't drop from them at all. -Sahjiarah 04:11, 26 April 2013 (UTC)
i do CoE fullruns daily and i only get charged lodestones.. taht must be wrong
What about the branded foes? I have seen crystal cores and crystal shards droping from them, so probably there is a chance of crystal drop. A friend of mine got it from The Shatterer chest too, the big one.