Orthoceras Fossil Cuff
This Orthoceras Fossil Cuff features a Large Orthoceras Fossil with gorgeous detail set in hand-forged sterling silver that has been oxidized. The Cuff is made for Medium size wrists and is on a split double cuff band with a thin patterned wire for extra detail hand formed out of half round wire. This cuff bracelet measures 3 inches in diameter with a 1.5 inch gap. It is slightly adjustable and can be adjusted to put onto the wrist. This should be done with as much care as possible as to not misshapen the band. The stone measures 65mm x 20 mm and the piece has been oxidized.
Orthoceras was an ancient mollusk that lived more than 400 million years ago. The name means straight horn, referring to the characteristic long, straight, conical shell. The preserved shell is all that remains of this ancestor of our modern-day squid.
The soft body lived in the last open-ended segment at the large end of the conical shell. As the body grew and the housing segment became too small, a dividing wall, called the septa, grew to separate the old “home chamber” from the new one. The differences in the composition of these shell parts allowed for differences in fossilization so the parts can be seen.
The siphuncle is a tube that runs the entire length of the shell, through each of the chambers. This tube had two functions. Once filled with water, the nautiloid could force the water out, propelling itself backward with a kind of jet propulsion. By releasing the water and leaving air space, the tube could serve as a bouyancy device allowing the animal to rise and lower itself to different depths.
These straight shelled nautiloids ranged in size from less than a centimeter to more than 14 feet long!
Stone: Orthoceras Fossil
Measurements: 65mm x 20mm
Metal: Sterling Silver
This is part of the "Of Times Past" Collection release. They are one of a kind so you will receive the pieces that are pictured.