De Grisogono 'Bocca' diamond and ceramic coated 18ct pink gold ring, composed of a pair of interlocking rings applied with a nano-ceramic coating, the outer of spherical design, the inner of swivel design sliding open to reveal a top pave-set with brilliant-cut diamonds, the diamonds together weighing approximately 1.30 carats, size 56 (P, not sizeable), numbered B70779, signed de Grisogono.