Sterling, a tooth, bouder opal, bone... why not? Why precious metals or fine jwelry have to be domesticated visual boredom if boundaries are something that exists just in our mind... 
In the Bones join vintage bone beads, a horse carved and aged tooth, a rough Australian boulder opal and solid Sterling in a bracelet that breaks boundaries and allows people with allergy to regular metalwork to wear unusual pieces it with total freedom.  -I personally can't wear  anything with iron, nickel nor tin... I get obnoxious blisters literally, like burnt. A friend says I must be a fairy. A weird one anyway. ;) A paradox for somebody that loves working in copper. 
It measures 9 1/4 inches fits a smaller wrist -due to the beads volume-