Vintage Platinum Opal and Diamond Cluster Halo Ring

This is a vintage cluster ring, approximately 70-80 years old, featuring a central cabochon-cut natural opal estimated to be between 1.5 to 2.5 carats. The opal exhibits a vibrant play-of-color, predominantly flashing neon green and hints of orange across a milk-blue base. It is securely held in a classic multi-prong setting within a platinum mounting. Surrounding the center stone is a floral-style halo consisting of 12 round-cut diamonds, likely single-cut or early brilliant-cut stones typical of the mid-20th century. These diamonds are prong-set in individual leaf-like or petal-shaped settings, creating a sunburst effect. The band is a slender, high-polished platinum shank with a slight taper toward the head. In terms of condition, there is visible surface wear consistent with age, including minor micro-scratches on the platinum and some slight dulling to the opal's surface finish (crazing is not immediately apparent, but would require magnification to rule out). The craftsmanship is characteristic of the late Art Deco or early Mid-Century modern periods, suggesting high-quality hand-finishing. No visible maker's marks are shown in the image, but the setting style is synonymous with fine heirloom jewelry from the 1940s-1950s.