The polished 20 mm ball made from Shattuckite has caps made from rhodiniert 925 silver on both sides.
Bore diameter 3mm, i.e. suitable for omega rings up to 1.5mm.
Shattuckite stone weight 51ct, silver weight 0.13g.
Origin of the rough material for the Shattuckite donuts: Kaokoveld Plateau, Namibia