AI Appraisal Estimate

A pair of stud-style earrings, each featuring a faceted oval-cut gemstone, likely blue topaz or aquamarine. The stones exhibit a vibrant light blue hue with significant clarity, though slight internal variations are visible under magnification. The gems are secured by a six-prong 'basket' style setting, which allows light to penetrate the sides and back of the stones, enhancing their brilliance. The metal appears to be sterling silver or white gold, though it shows noticeable tarnish and oxidation, particularly within the crevices of the prong architecture. The posts are standard friction backs, though the butterfly clutches are not shown. There is visible wear consistent with age and use, including minor scratches on the metal surfaces and a dulling patina. The construction is mass-produced yet functional, typical of late 20th-century jewelry. No hallmarks or maker's stamps are clearly visible in the image, but the overall style is classic and minimalist, making them a versatile accessory. The stones appear to be roughly 6mm by 4mm in size, indicating a modest total carat weight.

I have examined the digital images of these oval-cut blue gemstone stud earrings. The gems exhibit the characteristic pale sky-blue saturation and high clarity often associated with treated Blue Topaz or synthetic spinel, common in mid-to-late 20th-century commercial jewelry. The six-prong basket mountings show significant oxidation and tarnish, which is consistent with sterling silver (.925) rather than white gold. At an estimated 6x4mm per stone, the total carat weight is approximately 1.00 to 1.20 carats. The condition is fair to good; while the stones appear secure, the metal requires professional cleaning to rectify the heavy patina and superficial scratches. In the current secondary market, mass-produced silver jewelry featuring semi-precious blue stones is highly available, which limits rarity and keeps the value within the range of utilitarian decorative accessories. Comparables for vintage sterling and topaz studs typically realize under $100 at retail and significantly less at auction. Critically, a definitive valuation is limited by the nature of digital inspection. I cannot confirm the metal purity without a professional acid test or XRF analysis. Furthermore, differentiating between natural blue topaz, aquamarine, or laboratory-grown simulants requires refractometer testing and microscopic inspection of inclusion patterns. For a certified insurance appraisal, I would require physical access to check for hallmarks, stone hardness (Mohs scale), and precise carat weight via electronic scale.