18K White And Yellow Gold Octagonal Natural Emerald GIA Report #523135xxxx) And Diamond Ring E=1.22Ctw (7.54 x 5.61 x 4.19mm) 2D=~.81Ctw
Take a piece of non-stretchable string, ribbon, thread, or a thin strip of paper. Wrap it comfortably around your ring finger, close to the knuckle.