Gold and Green Gemstone Stud Earring

This item is a single stud earring, featuring a spherical green gemstone set in a yellow gold metal. The gemstone appears to be opaque and exhibits a mottled dark green color with subtle lighter green variations, indicative of materials like jade, serpentine, or possibly aventurine. It is held securely by a four-prong setting that cups the lower half of the stone, allowing the upper visible portion to be fully exposed. The prongs are integrated into a short post that connects to the earring's back findings. The back of the earring consists of a standard buttercup-style post and butterfly backing, which is still attached to the post for display purposes. The metal has a bright, polished gold appearance, suggesting it could be yellow gold, though no specific hallmarks are visible in the provided images to confirm karatage. The overall construction appears sturdy and well-finished, with no obvious signs of damage, wear, or repairs to the metalwork. The gemstone itself seems to be in good condition, without visible chips, cracks, or significant abrasions. Based on its design, it likely dates from the mid-20th century onwards, favoring a classic and understated style. The craftsmanship points to a mass-produced, yet carefully assembled piece of fine or costume jewelry.

I have examined the provided image of this single stud earring, featuring a spherical green gemstone set in a yellow gold-toned metal. Visually, the earring appears to be in good condition with no visible damage, chips, or cracks to the gemstone, and the metalwork shows no obvious signs of wear or repairs. The four-prong setting securely holds the opaque, mottled dark green gemstone, which could be jade, serpentine, or aventurine. The metal's bright, polished gold appearance suggests it may be yellow gold. However, without visible hallmarks or physical inspection, I cannot confirm the karatage or even if it is solid gold versus gold-plated. The design, featuring a buttercup-style post and butterfly backing, is classic and consistent with pieces from the mid-20th century onwards. My valuation accounts for the uncertainty regarding the metal's purity and the specific identity of the gemstone. If the metal were confirmed as 10k or 14k gold and the gemstone identified as a common semi-precious stone, the value would fall within the lower to mid-range. While the craftsmanship appears sturdy, this item seems to be a mass-produced piece, common in both fine and costume jewelry markets. Demand for single stud earrings is generally lower than for pairs unless it's a very unique or high-value piece. Comparative sales for similar gold-toned gemstone stud earrings (single) without definitive material identification typically fetch values in the proposed range. For full authentication and precise valuation, an in-person examination is crucial. This would allow for verification of metal hallmarks for karatage, specific gravity testing or spectroscopic analysis to definitively identify the gemstone, and microscopic inspection for any wear or repairs not visible in the image. Without these, the authenticity of the material composition remains speculative, and my appraisal is based purely on visual assessment and common market comparables for similar-looking items.