A common Chinese pendant-form, the bi is also known as the Disc of Heaven, and was used as a kind of prayer-wheel in Taoist and Buddhist ritual practice. As such, it sees a lot of use as a pendant in Chinese society - and has travelled far enough around the world in the modern day that it's not an uncommon pendant form in many countries. This example was carved from a spectacularly translucent example found in the Hokitika River that was so good to look at when found, it was initially mistaken for a jade!
 
Measuring in at 6mm external diameter, and with an internal bore diameter of 17.5mm, this ia a truly classical form of bi - in which the bore is the same width as the material to each side of it, such that it takes up a perfect third of the stone's diameter. The stone from which it's carved sports not just green tones, but also the reddish-brown hues that are often referred to in Maori culture as totoweka (meaning blood of the weka). It's a striking piece, and its translucency offers it an edge glow that is matchless among serpentines.