Masonic Black Onyx and Diamond Ring in Yellow Gold

This is a men's fraternal signet-style ring featuring the iconic Square and Compasses emblem of Freemasonry. The ring is constructed with a substantial yellow gold band, likely 10k or 14k, showcasing a rectangular polished black onyx tablet as the central focal point. Inset into the onyx is a white gold or silver-toned Masonic emblem, which is adorned with a small round-cut diamond at its center. The shoulders of the ring are intricately designed with a tiered, architectural motif and are accented by two additional small melee diamonds set in light-colored metal. The craftsmanship indicates a mid-20th century construction (circa 1950s-1970s), characterized by its bold, masculine proportions and high-relief detailing. The gold shows signs of natural wear with minor surface abrasions and a slight patina consistent with long-term use. The onyx appears to be in good condition without visible chips on the top surface. The diamonds are securely set, and the overall structural integrity of the shank remains robust. Quality indicators include the precise mounting of the emblem onto the stone and the balanced symmetry of the side accents.

I have conducted a visual examination of the mid-20th-century Masonic signet ring. The piece presents as a classic example of fraternal jewelry from the 1950s-1970s, featuring a polished black onyx tablet with a central Square and Compasses emblem. Based on visual cues, the metal appears to be at least 10k or 14k gold with white metal accents for the diamond settings. The condition is graded as 'Good' for its age; the gold displays a natural patina and surface micro-scratches indicative of long-term wear, which adds to its character as an heirloom. The onyx remains free of significant chips, and the melee diamonds appear securely set. Market demand for fraternal jewelry remains steady among collectors and members of the craft, though high-relief architectural designs like this tiered example are more desirable than simpler modern versions. Comparables for 10k/14k Masonic onyx rings with diamond accents typically sell within the $600 to $900 range depending on gram weight. Factors limiting this appraisal include the inability to verify the gold purity via acid or XRF testing, or to confirm the diamonds' clarity and color grading. To finalize this valuation, a physical inspection is required to weigh the piece in grams, verify the karat hallmark, and examine the diamonds under 10x magnification to distinguish natural stones from synthetic substitutes. Provenance documentation or a maker's mark (such as Ostby & Barton or Josten's) would further refine the historical value.