Geometric metal clip-on earrings

This pair of clip-on earrings is crafted from a dark, oxidized or patinated grey metal, possibly pewter, sterling silver, or a base metal alloy, and features a distinctive abstract geometric design. Each earring consists of a rectangular or slightly trapezoidal drop section decorated with an incised grid pattern filled with various primitive or tribal-inspired motifs, including circles, spirals, triangles, dots, and wavy lines reminiscent of ancient rock art or modern postmodern design. At the top of each rectangular drop sits a protruding, domed element topped with a smooth, dark cabochon stone or polished glass inlay. The overall construction displays a sculptural, architectural quality typical of mid-to-late 20th-century artisan jewelry, possibly leaning into a Memphis Group or tribal revival aesthetic popular in the 1980s or 1990s. There are no visible maker's marks, hallmarks, or signatures apparent in the image. The physical condition appears generally well-preserved with a dark, intentional patina in the recessed areas and minor surface wear consistent with age and use. The identification rests purely on visual and stylistic analysis of the shape, pattern, and construction without physical testing or inspection.

Based on what I can see in the provided image, this pair of clip-on earrings exhibits a sculptural, postmodern aesthetic reminiscent of 1980s or 1990s artisan costume jewelry, featuring an oxidized grey metal drop with incised tribal-inspired motifs and a cabochon inlay. I can't verify from a photo whether the metal is pewter, sterling silver, or a base alloy, nor can I determine the exact composition of the inlay without physical testing. There are no visible maker's marks or signatures apparent in the image, meaning any attribution to a specific designer or studio remains entirely a working hypothesis based solely on stylistic analysis. The physical condition appears well-preserved with an intentional dark patina and minor surface wear. My appraisal value estimate of $75 to $150 reflects the typical market behavior for mid-to-late 20th-century artisan-style costume earrings of this type and visual appeal. However, this valuation assumes the design attribution and period style are correct; if physical inspection were to reveal the piece to be a modern reproduction, replica, copy, or generic 'in-style' mass-market fashion jewelry, the value would likely decrease to the $20–$40 range. To establish a more precise valuation and potentially confirm the material composition, maker, and age, an in-person examination, hallmark verification, and expert appraisal would be necessary. A physical inspection would also be required to assess the integrity of the clip-on mechanisms and verify the exact nature of the dark metal and stone or glass inlays.