The mod/item is an add-on(by another mod) for ThaumCraft.
This item is provided by an add-on, and is not found in vanilla Thaumcraft.
Combining elemental shards with your inkwell results in some interesting effects. The Crystal Scribing Tools seem to absorb knowledge as you use them to write. Once the well is empty of ink, you can absorb this knowledge for a small burst of research points by holding the tools in your hand and right clicking. Unfortunately, this burns the tool out and turns it back into a mundane Scribing Tool again.
Aspects needed to Learn: