The thing about granulation that makes it so interesting is that until recently, the process used to create it was a complete mystery.
When you heat gold, it forms a sphere. What the Etruscans did was then add those little spheres of gold onto a base. That doesn't seem too difficult until you consider the melting point of gold. How do you heat these little spheres and the base to which you're applying them without melting the whole kit and caboodle?
Gradually, the experimentation process began again and the pieces that were discovered in the 19th Century were revisited. Somewhere along the long line of jewelers, the original granulation process used by the Sumerians and Etruscans was discovered. Now jewelers re-incorporate it into their work with great success. One of those jewelers is a husband and wife team, Elizabeth and Jack Gualtieri of Zaffiro Jewelry. I recently was able to visit with Jack and see their pieces first hand. There's a lot to admire about their work.