Mixed-stone rectangular pendant in white metal setting

This pendant appears to be a mixed-media jewelry piece consisting of a large rectangular cabochon and a smaller oval-cut accent stone. The primary stone is an opaque, reddish-brown gem with natural white and darker banding, which is stylistically consistent with varieties of jasper or similar siliceous minerals. Above the main stone sits a small, faceted accent gem of a deep magenta or purplish-red hue, reminiscent of garnet or rhodolite. Both stones are housed in a white metal mount that shows a light grey patina consistent with sterling silver or a similar alloy, featuring rope-twist borders and granular decorative accents at the corners. The piece is suspended from a textured, rope-patterned bail. No maker's marks or hallmarks are visible in the provided image; therefore, any specific metal purity or designer attribution remains a hypothesis subject to physical testing. The craftsmanship shows a combination of cast elements and applied wirework, suggesting a contemporary or late 20th-century artisan production. Condition-wise, the metal exhibits minor surface scratches and localized tarnish, while the stones appear intact with common natural inclusions.

Based on the image provided, I have performed a visual analysis of this mixed-stone rectangular pendant. What I can determine is that the piece displays a design language characteristic of late 20th-century artisan silverwork. The primary stone appears to be a variety of jasper, while the smaller faceted accent gem is consistent with the color profile of garnet or rhodolite; however, I cannot verify the exact mineral species or whether the stones are natural, synthetic, or glass without physical testing. The metal setting exhibits a patina and texture suggestive of sterling silver, but in the absence of visible hallmarks, I must treat the metal purity as a hypothesis. I cannot confirm the silver content or the presence of a maker's mark from this photo alone. The value estimate is based on the assumption that the mount is sterling silver and the stones are genuine semi-precious minerals. In the current market, artisan jewelry of this type generally appeals to collectors of 'Southwestern' or 'Bohemian' styles. If the metal were found to be a base-metal alloy or silver-plated, the value would likely drop below $30. Conversely, if a specific notable artist's mark were identified upon physical inspection, the value could exceed the current range. To provide a more precise valuation, a physical examination is required to verify metal fineness through acid or XRF testing, confirm gemstone identity via refractometry, and check for obscured signatures behind the bail. For insurance or sale purposes, provenance documentation or a confirmed hallmark would be necessary to elevate the piece beyond an unattributed artisan work.