White Gold Marquise Onyx/Black Tourmaline and Diamond Ring

This item is a ring featuring a prominent marquise-shaped dark gemstone, likely onyx or black tourmaline, set in what appears to be white gold. The central stone is elongated and boat-shaped, with pointed ends, and exhibits a smooth, polished surface with a dark, possibly opaque or highly translucent, color. The setting around the marquise stone is sleek, with the metal tapering to a fine point at each end, allowing the stone to be the focal point. Flanking the central stone on either side are two clusters of smaller, round brilliant cut diamonds, with each cluster appearing to contain two diamonds, set in a pave or bead setting. These diamonds provide a sparkling contrast to the dark central stone. The ring's band is crafted from white gold, which is indicated by its silvery-white luster, and has a graceful, curved, or split-shank design where it meets the gemstone setting. The overall condition appears good, with no obvious signs of significant damage, chips, or scratches visible on the central stone or diamonds from the provided image. The metal shows a clean finish consistent with white gold, although typical minor surface wear or light scratches might be present not visible in this resolution. Given the style, particularly the marquise cut stone and the general design, the ring could date from the mid-20th century onwards, perhaps 1960s to 1980s, reflecting a timeless and elegant aesthetic. The craftsmanship appears to be of good quality, with precise stone setting and a well-finished metal structure.

Upon my visual examination of this white gold ring, it presents as a handsomely crafted piece, likely dating from the mid-to-late 20th century. The focal point is a large, marquise-cut dark gemstone, which, based on its appearance, is consistent with onyx or black tourmaline. This central stone shows a very good polish and is securely set. Flanking the marquise are four round brilliant-cut diamonds, two on each shoulder, which appear bright and well-matched, set in what appears to be 14k or 18k white gold. The overall condition from the image is very good, with no visible damage to the stones or significant wear to the setting. The valuation is influenced by current market conditions for fine jewelry of this style. Similar vintage or retro-inspired rings with onyx/tourmaline and diamond accents are moderately popular. The primary value drivers are the precious metal content, the size and quality of the diamonds, and the craftsmanship. The large size of the central stone is a key feature, but since onyx and black tourmaline are relatively common, its contribution to the overall value is less than that of the diamonds and gold weight. It is crucial to note the limitations of this appraisal. Without physical inspection, I cannot confirm the exact metal fineness (e.g., 14k vs. 18k), definitively identify the central stone as onyx versus tourmaline, or ascertain the precise carat weight, color, and clarity of the diamonds. A full gemological workup, including testing the metal and stones and weighing the item, would be necessary for a certified insurance appraisal. The value provided is a fair market estimation based on the visual evidence provided.