Modeled (not scanned) version of a jade Bi Disc, 1100-771 BCE, now in the collection of the Minneapolis Institute of Art.
More information about the object here:
https://collections.artsmia.org/art/1055/bi-disc-china
Bi discs on Wikipedia:
https://en.wikipedia.org/wiki/Bi_(jade)
Inspired by Tom Flynn's ( @nebulousflynn ) Neolithic Jade Earring
( https://skfb.ly/6PY8X ) , built from a single image made available by the National Palace Museum in Taiwan.
This bi disc model is made from our front (recto) and reverse (verso) images; we've approximated the specularity and translucency from the real object.