Diego Gangl helps you achieve realistic transparency by adding an index of refraction reference list to Blender.
Hi! I've made a small addon to keep IOR values close by when working in Cycles.
This script adds a list of over 300 IOR values in the nodes editor. Probably enough for everyone
It also includes a button to insert a value node with the selected IOR. Most times you can just type it but it can be handy if you have to plug the same IOR on different nodes. Also as with all UILists in Blender, you can search and sort the list by clicking the plus icon at the bottom.