Oval Black Star Sapphire and Diamond Accent Ring

This is a fine jewelry ring featuring a central oval cabochon-cut black star sapphire estimated to be approximately 1.0 to 1.5 carats. The sapphire displays a distinct asterism, showing a six-rayed star under direct lighting, characteristic of high-quality corundum with needle-like rutile inclusions. The gemstone is held in a four-prong setting within a yellow gold mounting, likely 10k or 14k gold. Flanking the central stone on each side of the shank are small, round-brilliant accent diamonds set into a split-shoulder or bypass-style architecture. The band is slim and polished, tapering towards the base. The construction appears to be machine-cast with hand-finishing, typical of mid-to-late 20th-century jewelry design (circa 1970s-1990s). The piece shows signs of light wear, including minor surface scratches on the gold band and a slight patina consistent with age. There are no visible cracks or heavy abrasions to the central sapphire's surface in the current view. While maker's marks are not visible from this angle, they would likely be found on the interior of the shank. The overall craftsmanship is consistent with commercial-grade fine jewelry produced by reputable retailers of the era.