Thorium recently has added a seventh gem, Opal, which currently serves only to make accessories related to the Bard class, but it's mined like the other gems around the world. I would love to see this new gem given some love, like a Gem Staff (Like all other seven gems) and its enhanced counterparts (Which is a Crystilium thing).
I gave suggestions right now to FishermanSam on the normal Opal Staff and some other gem-related things, but enhanced gem staves is a Crystilium thing, so I suggested it here.