An ultra-modern geometric piece of art from the Spatialism period, of the 1970s. This unusual and rare one-of-a-kind ring is made of 18 karat solid yellow gold with white gold details. The surfaces are finished with a mirrored polished finish. The opening is embellished, with a sphere with yin-yang patterns attached to the edge, giving the optical illusion that it floats inside and rotates around its orbit. Half of the sphere is decorated with a natural red Italian coral carving and the other is mount with an impeccable pave setting of 62 calibrated round brilliant cuts diamonds, 1.55 carats, E/F color, VS-1 Clarity. Have a total weight of 39.5 Grams actual size is 6.75 sizeable. The top view diameter is 31 mm (1.22 Inches) and raise 26 mm over the finger. Stamped with Italian assay hallmarks, "ITALY .750 18 Kt". Very good conditions. Upon Request, Auction House may provide an appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.