This piece is a creation from repurposed + salvaged bits. The vertebra like shapes are of rectangular pieces of abalone shell backed by a black resin. I stacked and connected the pieces with tarnish resistant craft wire. The circular choker is from a length of salvaged electrical copper wire and has a very nice patina. The vertebra pieces hang approx. 13+1/8" from collar. This is a strong, show-stopping piece! Be fearless!