Celtic-style openwork pendant with green cabochon

This item is a circular pendant featuring an ornate openwork metal overlay set atop a dark green cabochon stone. The owner describes the piece as sterling silver with a green stone, though these materials are unverified without physical testing and no hallmarks are visible in the provided image. The metalwork displays a silvery patina with significant darkening in the recessed areas, consistent with oxidized silver or silver-toned base metal. The central design consists of a geometric latticework resembling Celtic knotwork or a Gothic rose window motif, featuring diamond shapes and four-dot patterns. This central element is enclosed by a textured rope-twist border and an outer decorative frame with scrolled, foliate-like flourishes. The green stone visible beneath the metalwork appears opaque with a matte to semi-gloss finish, stylistically consistent with green jasper, aventurine, or possibly glass, but remains unauthenticated. There is visible wear consistent with age, including minor surface scratches and heavy tarnish. The construction and aesthetic are stylistically consistent with mid-to-late 20th-century costume jewelry or artisan-crafted 'revival' pieces. Because no maker's mark or purity stamp is visible, all attributions regarding age and material composition are hypothetical and subject to in-person inspection.

Based on my visual analysis of the provided image, I have examined this circular openwork pendant. The piece features a Celtic-style or Gothic-inspired metal overlay set against an opaque green cabochon. While the user identifies the materials as sterling silver and green stone, I cannot verify this from a photo alone as no hallmarks or purity stamps are visible. The dark patina suggests either silver oxidation or decorative tarnish on a base metal. The stone displays characteristics consistent with jasper or glass, but its true composition remains a hypothesis subject to physical testing. The construction suggests a mid-to-late 20th-century revival piece rather than an antique. My value estimate of $40–$85 assumes the metal is sterling silver; should the piece be identified as a silver-toned base metal or costume jewelry, the value would likely decrease to the $10–$25 range. Markets for 'Celtic revival' artisan jewelry show steady demand for wearable sterling pieces, though the lack of a maker's mark limits its collectible ceiling. To confirm this estimate, an in-person inspection is required to test metal purity and stone hardness. Documentation of provenance or the discovery of a hidden hallmark would further refine this valuation.