Gold-tone pendant set with green decorative stone in the style of Chinese jade jewelry

This item is a circular pendant held by a person's fingers, suspended from a gold-tone box chain featuring a lobster-style clasp. The pendant showcases a prominent, donut-shaped (bi-disc) green stone with mottled inclusions and varying shades of vibrant emerald and forest green, which is stylistically consistent with jadeite or nephrite jade. A polished gold-tone metal dome is set in the center of the stone. The outer perimeter of the pendant is decorated with an openwork, scalloped-edge filigree frame, also in a yellow gold-tone finish. The craftsmanship reflects a late 20th-century or contemporary aesthetic influenced by traditional East Asian motifs. From the photograph, the materials appear to be consistent with gold-plated base metal or gold, though no hallmarks or fineness stamps are clearly legible on the pendant itself to verify metal content. The stone surface appears smooth and polished, while the chain and clasp show minor surface wear consistent with handling. Without physical testing or a visible maker's mark, the identity of the stone and the purity of the metal remain unverified hypotheses based on visual appearance.

Based on my visual analysis of the provided image, I have examined this gold-tone pendant featuring a green bi-disc stone in a decorative filigree frame. From what I can see, the piece reflects an aesthetic common in late 20th-century or contemporary Chinese-inspired jewelry. While the stone shows the mottled green hues often associated with jadeite or nephrite, I cannot verify the material's mineral identity or treatment status without physical gemological testing. Similarly, although the metal has a yellow gold appearance, I cannot confirm its purity or if it is gold-plated base metal, as no hallmarks are clearly visible. The estimated value of $50-$150 is based on the piece being a designer-brand costume item or a low-carat gold-plated decorative piece. Market demand for 'in the style of' jade jewelry is generally stable for its ornamental value. However, the value is highly dependent on material verification; should physical inspection and scientific testing confirm the stone as high-grade natural jade and the metal as high-karat solid gold, the value would likely increase significantly into the thousands. Conversely, if identified as dyed quartz or plastic with base metal, the value would fall below $20. To establish a more precise valuation, a physical examination is required to check for hidden hallmarks, measure the metal’s fineness via acid or XRF testing, and perform refractometer tests on the stone. At this stage, I am treating the materials as unverified hypotheses based solely on visual characteristics. A provenance check or documentation of the original retail source would also assist in refining this estimate. As it stands, the piece is valued as a decorative fashion accessory of undetermined composition and origin.