The semi-translucent bright emerald green jadeite hoop, diameter 31.0mm.
Accompanied by a report from the Hong Kong Jade & Stone Laboratory, stating that the disc is natural jadeite and no resin was detected. Report number SJ 5073, dated 17th September 2009.
These flattened discs with holes in the centre are called 平安扣 or peaceful hoop. In ancient Chinese cosmology, the disc mirrored the rounded arch of the sky across which the sun moved and the stars revolved. The circle symbolises wholesness and peacefulness.