Onyx Birthstone Cocktail Rings

Midnight Luxury, Onyx and Sterling Silver Single Stone Ring from India

Rapt, Onyx Cabochon Cocktail Ring from India

New Moon at Midnight, Black Onyx and Oxidized Sterling Silver Ring

Courage Amulet, Sterling Silver Cocktail Ring with Black Onyx Cabochon

Princess Gem, Handmade Onyx Single-Stone Ring from Bali

Forest Checkerboard, 6-Carat Green Onyx Single-Stone Ring from India

Magical Kite, Marquise Onyx Cocktail Ring Crafted in India

Verdant Tear, Green Onyx and Marcasite Cocktail Ring

Block Party, Bezel Set Onyx and Sterling Silver Cocktail Ring

Gleaming Green, Marquise Green Onyx Cabochon Sterling Silver Cocktail Ring

Moon Halo, Sterling Silver Cocktail Onyx Ring

Midnight Hearts, Black Onyx and Sterling Silver Cocktail Ring

Green and Lovely, Green Onyx and Peridot Cocktail Ring from India

Deceptively Square, Onyx and Brushed Silver Ring

Green with Envy, Sterling Silver Cocktail Ring with Green Onyx Cabochon

Green Gleam, Green Onyx and Sterling Silver Cocktail Ring from India

The Heart, Handmade Brushed Sterling Silver and Onyx Heart Ring

Glamorous Beauty in Black, Oval Onyx Cocktail Ring in Black from India

Captivating, Onyx and Sterling Silver Cocktail Ring Handmade in Bali

Subtle Oval, Handmade Men's Onyx and Sterling Silver Cocktail Ring

Temple Heirloom, Black Onyx Single Stone Ring Crafted in Bali

Blackberry Blossom, Ornate Handcrafted Silver and Onyx Cocktail Ring

Daydream Temple, Handcrafted Onyx Cocktail Ring from Bali

Verdant Angles, Leafy Green Onyx Cocktail Ring from India

Glamorous Beauty in Green, Oval Onyx Cocktail Ring in Green from India

The Circle, Women's Artisan Crafted Onyx and 925 Silver Ring