Cushion-Cut Sapphire and Diamond Halo Cocktail Ring

This is a contemporary-style cocktail ring featuring a prominent central gemstone, which appears to be a deep-blue sapphire or high-quality glass simulant. The center stone is cushion-cut and set within a rounded rectangular halo of approximately 16-18 smaller, round-cut clear stones, likely diamonds or cubic zirconia. These accent stones are set in a bright, white metal mounting, which could be white gold, platinum, or sterling silver based on the high luster and cool tone. The ring's band or 'shank' also features micro-pavé or channel-set accent stones extending down the shoulders for added brilliance. The craftsmanship displays a modern 'halo' aesthetic, popular in the late 20th and early 21st centuries. In terms of condition, the metal surfaces show a polished finish with no immediate signs of significant tarnish or structural deformation, though closer inspection of the prongs would be required to ensure stone security. No maker's marks or hallmarks are clearly visible in the image, but the overall presentation suggests a piece designed for formal wear or as an engagement ring. The stone's saturation is vibrant and uniform, suggesting either a high-grade natural sapphire, a lab-created stone, or a synthetic imitation.