In doing a search:
slot: ear
category: augmentation
type: 11
The resulting list includes the varying cuts of the Underfoot Diamond gem.
All of the cuts show level 1 (required) EXCEPT the half-moon cut. The half-moon cut shows level 85 (required).
When one looks at the link for this particular cut of the Underfoot Diamond no reference to a level is shown.
It seems that the chart is wrong but not the item.
It puzzles me how this could be, but I drop the info on you coders... hehe