Phosphosiderite Ring Appraisal

Oval Lavender Turquoise or Phosphosiderite Prong-Set Ring

This item is a large, hand-held fashion ring featuring a prominent oval-shaped cabochon gemstone. The stone exhibits a striking color palette of pale mint green and soft lavender-pink, bisected by a dark green or grey dendritic matrix that patterns the surface. Based on the pastel coloration and veining, it appears to be either high-grade ‘Lavender’ Turquoise or possibly Phosphosiderite. The stone is roughly 30-35mm in length and is secured by a distinctive ten-prong setting—five on each side—crafted from a dark, possibly oxidized or blackened sterling silver metal. The craftsmanship suggests a contemporary artisanal or Southwestern-inspired design, though lack of visible hallmarks prevents definitive artist identification. The condition of the gemstone appears smooth and well-polished with a vitreous luster, showing no immediate signs of surface fractures beyond the natural matrix inclusions. The metal shows a dark patina consistent with intentional oxidation for stylistic contrast. The setting is robust, with the prongs appearing structurally sound and evenly spaced, indicating quality benchwork. This piece represents a unique specimen likely dating from the late 20th to early 21st century.