Skeletons are the first of some other pieces that will emerge in the future with bonded or cultured marble, a castable material that can allow an artist to create versatile and durable marble like pieces. Bonded or cultured marble is how lots of modern times "marble" sculptures are made instead of the carving of the stone, giving quality, durability and looks that offer also affordability. 
In this case, the bonded marble -yes, it has Real Carrara Marble in it!!!- cast as skulls was the "stone of choice" for this modern brutalist earrings in solid sand cast Sterling with a talismanic form and rounded ear wires.
The earrings are shown on the pictures on a real human size mannequin, aside a quarter coin, a regular steel ruler and a standard business card to give you an idea or their real dimension.
 
Priced as sale for being the first pieces in this new experimental material