I am reading about gems and how they were incorporated into rings in Rome. Accordingly, I’m learning to set and design with stones. It’s a lot harder than it looks. When you see them in a jewelry case, they’re neat and orderly. Your eye can pick up a hairs’ width difference if everything is not perfect.
The prongs on the left are forward by a tenth of a millimeter, and yet you can clearly see it in this macro image. Practice, practice, practice.