Art Nouveau style gemstone pendant necklace

This delicate necklace features a decorative metal pendant suspended from a fine, flexible box chain resting on a metallic surface. The metal appears to have a silver tone with an antiqued or oxidized finish in the recesses to accentuate the intricate scrollwork and filigree details. The pendant assembly is centered around a cluster of faceted, marquise-cut and round green stones, possibly emeralds, tourmalines, or glass simulants, arranged in a winged or floral cluster motif. Dangle-suspended from the bottom center of the cluster is a single, faceted pear-shaped or teardrop-shaped orange stone, which may be citrine, topaz, or a colored simulant. The overall aesthetic is heavily influenced by the organic, flowing lines characteristic of the Art Nouveau period, utilizing symmetrical scroll elements flanking the central stone cluster. The chain includes a small clasp mechanism near the upper section, though specific maker's marks or hallmarks are not clearly legible from this image angle. The condition appears generally good with intact stones, though minor tarnish or surface wear typical of vintage or costume jewelry cannot be ruled out without physical inspection. The identification is based purely on the visual design elements, decorative motifs, and gemstone arrangements captured in the photograph.

Based on what I can see in the photograph, this pendant necklace exhibits strong aesthetic traits characteristic of the Art Nouveau period, featuring delicate filigree scrollwork, a winged floral cluster of green stones, and a teardrop-shaped pendant accent. However, I cannot verify from a photo alone whether the metals are precious—such as sterling silver or gold—or merely base metals with an antiqued finish, nor can I determine if the green and orange stones are genuine gemstones like emeralds and citrine, or simply glass simulants. I would need physical inspection to confirm material composition and inspect for any maker's marks or hallmarks. My estimated value range of $350 to $600 assumes that the piece is a period-authentic Art Nouveau creation crafted with quality semi-precious materials. The market demand for vintage Art Nouveau revival and period jewelry remains steady among collectors of antique decorative arts, though values fluctuate heavily based on material composition. If physical testing reveals that this piece is a later reproduction, replica, or crafted entirely in the style of Art Nouveau using base metals and glass, the market value would drop significantly, typically falling into the $75 to $150 range. To confirm authenticity and establish a precise valuation, the item would require in-person examination by a qualified gemologist, hallmark verification, and potential metallurgical testing.