Description Sparkle with all the facets of a true diamond with cubic zirconia. These lab-created crystals are engineered to be indistinguishable from diamonds to the naked eye. This beautiful silver-toned ring features a pear-cut cubic zirconia. Sparkle with all the facets of a true diamond with cubic zirconia. These lab-created crystals are engineered to be indistinguishable from diamonds to the naked eye. This beautiful silver-toned ring features a pear-cut cubic zirconia.