I posted this last week, but promptly deleted it.
@Tom Gall rightfully and politely called me out for some sloppy glue/paint work. I went back to the bench, got my smallest chisel and paintbrush, and cleaned up the piece considerably. It's nice to put pieces in the public eye for review--I didn't think the sloppiness was that bad, but after someone mentioned it, that was all I could see. Thanks Tom!
Anyway, this egg is hollowed to a bit less than 1/4", the inside ebonized via India ink, and the top and bottom are adjoined via bent maple veneer and birch button plugs.