Mid-Century Modern Sterling Silver and Rectangular Black Onyx Signet-Style Statement Ring
Jewelry (Ring) · Unidentified custom or boutique silversmith. The piece displays characteristics common to Southwestern (US) or Mexican workshops known for semi-precious stone mounting and openwork casting during the mid-20th century.
Pattern: Non-specific geometric openwork pattern; likely a limited production or hand-finished artisan piece common in the 1950s-1970s.

Type
Jewelry (Ring)
Maker
Unidentified custom or boutique silversmith. The piece displays characteristics common to Southwestern (US) or Mexican workshops known for semi-precious stone mounting and openwork casting during the mid-20th century.
Material
Sterling Silver (.925) alloy with a bezel-set rectangular black onyx gemstone. The onyx is polished to a high sheen, while the silver body is solid throughout.
Dimensions
Estimated ring size 9-11 (US). Stone dimensions approximately 15mm x 12mm. Estimated weight between 8 and 12 grams (0.25 - 0.38 troy oz) given the hollowed-out gallery construction.
Description
This is a bold and masculine sterling silver statement ring featuring a deep black rectangular onyx cabochon. The stone is secured in a thick bezel, supported by an intricate openwork gallery that incorporates flowing, organic cutouts reminiscent of later Art Nouveau revival or Mid-Century Brutalism. The silver has developed a natural grey patina in the crevices, which enhances the three-dimensional quality of the decorative pierced work.
Key Features
Rectangular onyx flat-top; intricate pierced 'leaf or scroll' gallery; wide shoulders tapering to a slender band; high-contrast oxidation.
Material & Composition
Sterling Silver (.925) alloy with a bezel-set rectangular black onyx gemstone. The onyx is polished to a high sheen, while the silver body is solid throughout.
Finish & Decoration
Oxidized (antiqued) finish in the recessed openwork to provide contrast against the polished raised edges. Features a scroll-like pierced gallery and geometric cutouts on the shank.
Hallmarks & Stamps
The image does not clearly reveal marks, but based on style, one would expect a '925' or 'STERLING' stamp on the interior shank, possibly accompanied by an artisan's hallmark or a 'Mexico' origin mark.
Construction Details
Lost-wax cast body with hand-finishing and hand-set gemstone. The openwork gallery underneath the stone is designed to reduce weight while maintaining a bold, architectural profile.
Functional Features
Signet-style flat face with protective bezel setting; low-profile gallery for daily wear; tapered shank for comfort at the finger joint.
Handle & Grip Details
Tapered silver shank (band). The interior is smooth-polished for comfort; the exterior includes decorative recessed lines near the shoulders to blend into the main gallery.
Craftsmanship Details
Quality cast work with evidence of hand-refinement on the edges. The symmetry of the gallery indicates a skilled mold maker typical of mid-tier artisan workshops.
Authentication Indicators
Symmetry in the casting; natural tarnish patterns; wear on the bottom of the shank; bezel-setting technique typical of period workshops. The weight should feel substantial for its size.
Origin & Manufacturing
Likely North America (USA or Mexico). The construction mimics the 'Mexico Silver' era workshops of Taxco or the mass-market sterling boom in the United States mid-century.
Era & Period
Mid-Century Modern (c. 1950-1975). The brutalist-lite geometric openwork and choice of onyx were hallmarks of men's and unisex silver jewelry during this era.
Age Estimate
Circa 1960-1970. The patina, wear patterns, and specific style of the openwork gallery are consistent with this 50-60 year age range.
Cultural Significance
Represents the post-WWII shift in men's jewelry toward more decorative and artistic sterling silver pieces, moving away from simple wedding bands toward 'statement' fashion accessories.
Condition Notes
Very Good (Vintage). Minor surface scratches (pitting) on the silver shank consistent with age. The onyx stone shows no major chips. Light tarnish is present in the recessed areas (desirable for authenticity).
Value Estimate
$65 - $125 USD depending on size and maker's mark. Price is driven by the silver weight and 'retro' appeal rather than the rarity of the gemstone.
Care & Maintenance
Clean with a soft cloth and Wright's Silver Cream. Avoid ultrasonic cleaners as they can loosen the onyx or damage the stone's polish. Store in a dry, flannel-lined jewelry box.
Similar Pieces
Taxco Mexico Onyx rings (heavier, often signed); Zuni/Navajo channel inlay rings (smoother, different setting style); Victorian Jet rings (typically more ornate and darker/lighter in weight).
Interesting Facts
Black onyx was often used in signet rings because it was believed to provide 'protection' and 'focus' for the wearer. This specific style of gallery was popularized as a way to make jewelry look larger and more impressive without the excessive weight of solid metal.