Once you have successfully cut a Cuttable Gem to the correct shape, and unloaded it from the Gem Cutting Table, it is stored in your inventory as a
Cut <gem type>:<shape>, and the uses are listed in that same order.
Cut gems were used for many things in our grandparent's time, and this author is confident we, too, will find uses for them.
Currently known uses for cut gems:
Removed from Game: 8 Cut Amethyst: Full Eye for Ring Mechanics research.
A Gem Cutting Guide is available as is a Venery - Bijou School, located in northern Seven Lakes near the UThought.