Antique Colombian Emerald and Diamond Cluster Ring The Cosette ring is an authentic vintage emerald and diamond ring from the Victorian Era circa 1890. The ring centers a GIA-certified Octagonal Step Cut Colombian Emerald of moderate clarity enhancement weighing approximately 1.20-carats. Surrounding the center stone is a halo of 12 Old Mine Cut diamonds of approximately I-J color, VS-I clarity combining for roughly 0.60-carats. The stones are set in an 18kt yellow gold engraved setting. The rin Heirloom Emerald-cut Ring With Single Cut Diamonds, Heirloom Emerald Cut Ring With Single Cut Diamonds, Oval Emerald Ring With Single Cut Diamonds, Classic Green Emerald Ring With Single Cut Diamonds, Green Vintage Diamond Ring With Halo Setting, Vintage Emerald Ring With Vvs Clarity, Vintage Green Diamond Ring With Halo Setting, Green Diamond Ring With Halo Setting In Vintage Style, Vintage Green Emerald Ring With Brilliant Cut