.015 Antique Diamond & Onyx Cocktail Ring 14k

This antique Art Deco-era cocktail ring in 14 karat yellow gold features an oval cut black onyx in an ornate filigree mounting with a .015 carat single cut diamond set in white gold at the center.

The onyx provides a solid black backdrop that makes the small diamond visible despite its modest size, creating stark contrast between the dark stone and bright metal.

Single cut diamonds have fewer facets than full brilliant cuts—typically 16-18 versus 57-58—producing less sparkle but requiring less precision to cut, which is why they were commonly used for small accent stones in this period.

The filigree metalwork features the delicate openwork and geometric patterns typical of Art Deco design from the 1920s-1930s. This is a cocktail ring with bold presence from the dark onyx rather than relying on gemstone sparkle.