AI Appraisal Estimate

This item is a ring featuring a prominent marquise-cut black stone set in a gold-toned metal band. The stone measures approximately 15-20mm in length, and is a deep, opaque black, with a polished, reflective surface. Given the visual information, it is highly likely to be onyx or black tourmaline, as opposed to jade as indicated in the additional context, which typically presents with a more translucent appearance or distinguishable fibrous texture, even in its darkest forms. The stone is horizontally oriented on the finger. It is securely held by a bezel setting at each pointed end, which appears to be crafted from the same gold-toned metal as the band. The band itself exhibits a decorative, possibly filigree or sculptural, pattern on the shoulders leading up to the stone setting, indicating a level of craftsmanship beyond a simple plain band. The metal shows some areas of wear or slight discoloration consistent with age and use, suggesting it might be gold-filled, plated, or a lower karat gold alloy, rather than solid high-karat gold. There are no immediate visible signs of damage such as chips or cracks on the stone, and the overall condition appears good for an item that has been worn. The style suggests it could be from the mid-20th century, possibly 1950s-1970s, a period when bold, individual stones and intricate metalwork were popular. No specific maker's marks or signatures are discernable from the provided image.

I have thoroughly examined the provided image of the Marquise Cut Black Stone Gold Tone Ring. Based on its visual characteristics, the stone, measuring approximately 15-20mm in length, appears to be onyx or possibly black tourmaline, given its opaque, polished surface. This contradicts the owner's description of 'jade,' as jade typically exhibits more translucency or a fibrous texture. The gold-toned metal band and setting show expected wear consistent with its likely mid-20th-century origin (1950s-1970s), indicating it's probably gold-filled, plated, or a low-karat gold alloy rather than solid high-karat gold. The decorative shoulders suggest a reasonable level of craftsmanship for the period. While the overall condition appears good with no visible chips or cracks to the stone, the absence of discernible maker's marks is noted. Market conditions for vintage costume or gold-filled jewelry of this type are moderate. While the marquise cut is classic, without precious metal content or a verifiable designer, demand is primarily from collectors of vintage fashion jewelry. Rarity is not particularly high for such pieces. Factors impacting value include the non-precious metal composition, the commonality of onyx, and the general wear. It is crucial to state that this appraisal is limited by the visual information available through an image. Definitive authentication of the stone's identity (onyx vs. black jade), metal composition, and confirmation of its age would require in-person examination, including gemological testing for the stone and potentially XRF analysis for the metal. Such tests would confirm the material and help determine if the 'gold tone' signifies plated or filled material, significantly impacting value. Without physical inspection and testing, the authenticity of materials and precise age cannot be fully assured.