Modernist-style stud earrings with small stone accents

This pair of stud earrings features a contemporary, geometric design consisting of two stacked rectangular or square elements with a soft, satin-brushed finish. The metal appears to be white gold or silver-toned, consistent with 18k white gold or sterling silver, though physical testing is required to determine metal purity. Each rectangular segment is inset with a single, small, round-cut clear stone, which may be diamond or a synthetic substitute such as cubic zirconia. The stones are set within a square-shaped recess, creating a modern 'cell' effect. One of the butterfly earring backs bears a visible hallmark that appears consistent with '750', a standard mark for 18k gold; however, this marking remains unverified without professional inspection. The overall condition appears excellent with minor surface wear typical of handled jewelry. These earrings are stylistically consistent with late 20th to early 21st-century minimalist high-end jewelry, echoing designs from houses such as Chopard or similar luxury boutiques. No brand name is explicitly legible on the jewelry face, necessitating a hedged identification based on the '750' marking and construction quality.

Based on my examination of the provided image, these stud earrings exhibit a minimalist, geometric aesthetic characteristic of contemporary high-end jewelry. I observed a hallmark on the butterfly back consistent with '750,' which suggests a composition of 18k white gold. However, I cannot verify the metal purity or the stone quality from a photograph alone; physical testing is required to determine if the stones are diamonds or synthetic substitutes. My value estimate is based on the hypothesis that the earrings are 18k gold and diamonds, consistent with luxury boutiques such as Chopard. If this attribution is accurate, the items command a premium in the secondary market due to their modernist design and material value. Based on what I can see, the condition appears excellent, which supports the higher end of the range. I cannot confirm the maker, as marks can be misread or replicated; thus, this estimate reflects an item of this type assuming the '750' mark is representative of the whole piece. If physical inspection reveals the metal to be sterling silver or the '750' mark to be inaccurate, the value would decrease significantly to the $150-$300 range. To establish a more precise valuation, I recommend an in-person examination to verify hallmarks, perform a thermal conductivity test on the stones, and conduct a density or acid test on the metal. Current market demand for minimalist 'cell-set' jewelry remains stable, though value is heavily dependent on the confirmation of brand and material authenticity.