The Osetra Ring - Solid Carved Natural Onyx Hololith with 14K Solid Yellow Gold, Natural Amethyst, and Natural Diamond

The Osetra Ring is a sophisticated masterpiece of midcentury modern luxury—bold, sculptural, and unmistakably a showpiece.

Carved from a single piece of glossy black onyx (a true hololith construction), this ring carries an elegance rarely seen in contemporary jewelry. Its smooth, inky form feels like polished midnight, cool and sleek against the finger.

At its center rests a stunning faceted amethyst, bezel-set in rich solid 14k gold that frames it like molten sunlight around a violet pool. The amethyst’s soft lavender glow contrasts beautifully with the dramatic onyx, creating a balance of light and shadow that feels both artistic and opulent. Flanking the central stone are two petite diamonds, also bezel-set in solid gold—subtle, sparkling accents that complete the ring’s symphony of luxury materials.

This is the kind of piece once sought by collectors, couture lovers, and those who prefer their jewelry with presence.

Hololith rings require exceptional skill to carve and are rarely produced today, making this vintage creation even more extraordinary. Everything about it—its weight, its craftsmanship, its bold silhouette—speaks to a time when jewelry was made to be both wearable art and an heirloom.

Solid Natural Black Onyx

Solid 14K Yellow Gold

Stamped "14K"

Natural Amethyst

Natural Diamond

Total Weight: 10.3 grams

Size: 5  *Please note that, due to the nature of carved hololiths, many jewelers may not be able to resize this ring. Please speak with your trusted jeweler about resizing before purchasing this ring. Unless you are a size 5, in which case, lucky you!* 

Boxes and other display pieces are for photographic purposes only. They are not included with purchase. This piece is vintage and has been previously worn. Light surface wear, patina, or age-related irregularities are normal and part of the character and history of antique jewelry. All items are described and photographed as accurately as possible, but colors and scale may appear differently on screens. Please review photographs and measurements carefully before purchasing. Please review our return policy. Please do not hesitate to reach out if you have any questions.