As I remember, the egg was a miniature, and was the cloisonne' enamel that I enjoy designing from. This one is on 18 mesh canvas, but if put onto 13 mesh, as it is stitch counted for symmetry, it would be a lovely center for a personal prayer kneeler.
You never know where you will find inspiration for designs! This was from one of my favorite books on the subject - "Faberge and the Russian Master Goldsmiths."
I also made Christmas stocking cuffs adapted from an Art Nouveau tea service in the same book. The tulips were red, so I also got a fine ornament or two from the same pieces. I think the one that's a ball is shown in a previous post quite some time ago, and under the label "ornaments."