Heart pendant necklace stylistically consistent with Elsa Peretti for Tiffany & Co.

This jewelry item consists of a large, organic open-heart pendant suspended from a yellow gold-colored chain. The pendant appears to be carved from a reddish-brown material, which the user-supplied listing identifies as jasper. The heart shape is asymmetrical and fluid, measuring approximately 37mm in width as indicated by the included measuring tape. The fine cable-style chain features a small metal tag near the clasp, which appears to bear markings such as 'SPA' and '750', consistent with 18k gold fineness, though these require magnification for verification. The overall design is stylistically consistent with the 'Open Heart' collection by Elsa Peretti for Tiffany & Co., as suggested by the user's secondary text. The pendant surface appears smooth with a soft luster, showing no immediate signs of fractures or deep scratches in the provided images. A physical inspection is required to confirm the material composition and verify the authenticity of the hallmarks, as such designs are frequently emulated. The item is presented alongside a teal box and white ribbon, which are aesthetic markers often associated with the aforementioned brand but do not constitute proof of origin.

Based on the provided imagery, I have examined this large open-heart pendant suspended from a yellow metal cable chain. The pendant displays a silhouette and material composition—red jasper—that is stylistically consistent with the 'Open Heart' designs attributed to Elsa Peretti for Tiffany & Co. Based on what I can see, the metal tag bears markings suggestive of '750' and 'SPA', which corresponds to 18k gold fineness, though I cannot verify these marks without high-magnification physical inspection. The value estimate of $1,800 to $2,800 is predicated on the hypothesis that the item is a legitimate production from this designer line. This range reflects the high market demand for large-format gemstone pieces from this collection, which are less common than their metal counterparts. I cannot determine the exact quality of the jasper or the weight of the gold from a photo. To confirm these factors and the attribution, a physical examination is required to verify the hallmarks, test the gold purity, and inspect the stone for any internal fractures. It must be noted that these designs are frequently emulated. If the piece were found to be a replica or 'in the style of' without a verifiable link to the brand, the value would likely drop significantly to the $300 - $600 range, primarily reflecting the intrinsic value of the 18k gold chain and the decorative value of the jasper. General market conditions for signed designer jewelry remain strong, but the valuation is highly sensitive to the verification of the maker's marks and the integrity of the gemstone.