Yellow-toned metal ring with light green cabochon and Greek key motif

This item is a ring featuring a central, oval-shaped cabochon gemstone of a pale mint or celadon green color, which exhibits visual characteristics consistent with jadeite or nephrite jade, though this identification is unverified without professional stone testing. The stone is set within a yellow-toned metal frame that displays a repetitive geometric 'Greek key' or meander border design. The owner describes the metal as 14kt gold; however, there are no hallmarks or fineness stamps visible in the provided image to confirm this metal content or purity. The setting appears to be a raised oval gallery, and the metal shows a polished finish with some minor surface micro-scratching consistent with light wear. The overall aesthetic is consistent with mid-to-late 20th-century jewelry design, possibly of East Asian manufacture given the combination of green stone and classic geometric motifs. The identification remains a hypothesis based on visual inspection alone, as testing for stone authenticity and metal acid-testing or XRF analysis would be required for a definitive assessment.

I have examined the images of this ring which features a pale green cabochon and a Greek key border. Per user submission, the metal is identified as 14kt gold. Based on what I can see, the stone displays visual characteristics consistent with a hypothesis of jadeite or nephrite jade; however, I cannot verify the mineral species or whether it is natural, treated, or synthetic from a photo. Similarly, while the yellow-toned metal is consistent with the owner's description, I cannot confirm the gold purity as no hallmarks are visible. The value estimate of $400 - $700 assumes the metal is 14kt gold and the stone is a natural jade of moderate quality. This range is based on general market demand for mid-20th-century East Asian style jewelry. If the metal is found to be gold-plated or a base metal alloy, the value would likely drop significanty to the $20 - $50 range as a fashion piece. Conversely, if the stone were identified through laboratory testing as high-quality 'Imperial' jadeite, the value could exceed this estimate. To provide a more precise valuation, I would need an in-person physical inspection to perform acid-testing or X-ray fluorescence (XRF) analysis on the metal and gemological testing for the stone. This estimate represents the potential market value for an item of this type if the owner's attributions are correct, but it does not constitute a statement of authenticity.