AI Appraisal Estimate

This is an exquisitely crafted pendant in the shape of a key, featuring a distinctive four-leaf clover design for the bow (the top part of the key) and a stylized 'H' shape for the bit (the bottom part that inserts into a lock). The entire surface of the key, including the clover leaves, the shaft, and the bit, is meticulously encrusted with numerous small, round brilliant-cut diamonds, set closely together in what appears to be a pavé style, maximizing sparkle and brilliance. The metal color suggests white gold or platinum, consistent with high-end jewelry, and the '750' marking indicates 18-karat gold, as confirmed by the provided context 'Tiffany & co 750'. The craftsmanship is indicative of Tiffany & Co., known for its precision and quality. Each clover leaf is formed from a heart-shaped scroll, with a larger central diamond anchoring the four leaves. A small bail is integrated at the very top of the key for attachment to a chain. The overall condition appears excellent, with all diamonds present and no visible signs of wear, damage, or repairs on the metalwork or settings. The design exudes elegance and luxury, typical of Tiffany & Co.'s 'Keys' collection. Its intricate detailing and high-quality materials suggest a relatively recent production, likely within the last two decades, aligning with contemporary fine jewelry trends.

Based on my visual examination of the provided image, this Tiffany & Co. Four-Leaf Clover Key Pendant with Diamond Accents is an exquisite piece of fine jewelry. The 'Tiffany & Co. 750' marking confirms it as 18-karat gold from the renowned jeweler, lending strong credibility to its authenticity. The design, particularly the distinctive four-leaf clover bow and the stylized 'H' bit, is characteristic of Tiffany's 'Keys' collection, which enjoys significant market recognition. The condition appears excellent. All numerous small, round brilliant-cut diamonds, set in a pavé style, seem present and intact. The metalwork, consistent with white gold or platinum, shows no visible signs of wear, damage, or repairs, which is crucial for maintaining value. Each clover leaf, formed from heart-shaped scrolls with a larger central diamond, adds to its luxurious appeal and intricate craftsmanship. My valuation is based on current market conditions for similar Tiffany & Co. diamond key pendants of comparable size, diamond carat weight (estimated), and gold purity. Recent auction results and retail pricing for analogous pre-owned pieces indicate strong demand for iconic Tiffany designs. While not exceptionally rare, the four-leaf clover motif within the 'Keys' collection is quite desirable. Key factors impacting this valuation include the Tiffany & Co. brand premium, the 18k gold content, the extensive diamond coverage, and its excellent condition. The absence of a specific diamond carat weight, clarity, or color grading is a limitation. For full authentication and a more precise valuation, an in-person examination is essential to confirm the diamond quality (4 Cs), verify the 750 hallmark's integrity, and scrutinize the setting and craftsmanship for any subtle inconsistencies not visible in images. Provenance documentation, such as original purchase receipts or certificates, would further solidify its authenticity and value.