Pair of purple gemstone and yellow-toned metal stud earrings

This item consists of a pair of stud earrings mounted on a generic brown cardboard jewelry display card. Each earring features a center stone that appears to be a faceted, oval-cut purple gemstone, stylistically consistent with amethyst or a synthetic equivalent. The stone is held in a four-prong setting within a yellow-toned metal frame that exhibits a polished finish, suggestive of gold-plate or low-karat yellow gold. At the top of each oval setting, there appears to be a small, colorless accent stone, consistent with the appearance of a small diamond chip or cubic zirconia. No hallmarks or maker's marks are visible on the front of the earrings or the display card, making it impossible to determine the metal's purity or the brand without physical testing. The stones appear to be in good condition with no visible chips or fractures from this distance, while the metal shows typical surface reflections. The overall aesthetic is consistent with late 20th-century or contemporary costume or fine jewelry production. Hedged language is used as no identifying signatures or stamps are present to provide definitive attribution of materials or origin.

Based on my visual examination of the provided image, I have assessed this pair of earrings as contemporary costume or moderate-quality fine jewelry. Each earring features a faceted oval purple stone, stylistically consistent with amethyst or a synthetic simulant, accented by a small colorless stone that suggests the appearance of a diamond chip or cubic zirconia. I cannot verify the metal content from a photo as no hallmarks are visible; the yellow-toned finish could indicate gold-plating, gold-fill, or a low-karat gold alloy. The lack of branding or signatures on the display card or settings suggests a mass-market production rather than a bespoke or luxury designer origin. The stones appear in good condition, though microscopic chips or fractures cannot be ruled out without physical inspection. This value estimate reflects general market demand for similar gemstone stud earrings in the secondary retail or estate market. If the metal were verified as 14k gold and the stones as natural amethyst, the value would likely sit at the higher end of the $120 range. Conversely, if the materials are confirmed to be base metal and glass or synthetic stones, the value would likely drop below $25 as costume jewelry. To arrive at a more precise valuation, a physical examination including an acid test for metal purity, a gemological test for stone identification using a refractometer, and a search for maker's marks on the earring posts or butterfly backs would be required. Proper provenance or a original retail receipt would also assist in refining this estimate. At present, the value remains a hypothesis based on typical market behavior for items of this style and appearance.