Men's Mid-Century Modern Yellow Gold and Synthetic Sapphire Signet Ring

This is a substantial men's cocktail or signet-style ring, likely dating from the mid-20th century (circa 1950s-1970s). The ring is constructed from what appears to be 10k or 14k yellow gold, featuring a bold, angular architectural design. The centerpiece is a large, rectangular emerald-cut stone, identified as a blue sapphire. Given the size, vibrant electric blue clarity, and the era of the setting, it is highly likely to be a synthetic (Verneuil flame-fusion) sapphire, which was common in men's jewelry of this period. The stone is held in place by four heavy corner prongs. The shoulders of the ring exhibit a unique textured 'bark' or Florentine finish on the gold surfaces, accented by raised, polished flame-like or curvilinear flourishes that add a dynamic contrast. The sides also feature vertical ribbed detailing near the gallery. In terms of condition, the gold shows visible surface scratches and a light patina consistent with regular wear. The stone appears to have some minor abrasions and 'flea bites' along the facet edges (junctions), which is typical for a piece of this age. No hallmark is visible in the photograph, but such pieces are typically stamped on the interior of the shank. The overall craftsmanship is sturdy, reflecting the masculine aesthetic and heavy-set jewelry trends of the mid-century era.