Vintage Sapphire and Diamond Yellow Gold Slide Necklace

This is a vintage slide-style necklace centerpiece curated in yellow gold, likely 10k or 14k based on typical period manufacturing. The central feature consists of a curved articulating bar set with nine round-faceted gemstones in a shared-prong or bead-set arrangement. The stones include six deep navy-blue natural sapphires and three clear white diamonds (or white sapphire/CZ alternatives), alternating in a rhythmic pattern: two sapphires, one white stone, two sapphires, one white stone, and two sapphires to finish. The metal displays a high-polish finish with minor surface abrasions and some darkening of the recesses, suggesting a light patina consistent with age. The articulating bar is connected to a gold snake-style or 'omega' chain, which provides a flexible yet structured drape. While no maker's marks are visible in the provided view, the construction style is indicative of commercial fine jewelry from the late 20th century (circa 1980s-1990s). The craftsmanship is consistent with production pieces of the era, showing sturdy hinge work between segments to allow the piece to sit flush against the collarbone. The sapphires appear to be commercial grade with significant saturation, and the white stones are small melee size, approximately 0.02 to 0.05 carats each. The overall condition is good, showing no missing stones or significant structural damage, though the piece could benefit from a professional ultrasonic cleaning to restore the original luster of the gems.