This vintage black onyx signet ring is absolutely timeless

We mounted this antique setting with two vintage gems

Marks: "HO 10K" Stamped on the inside band

Marks: "10K ELH" Stamped on the inside band

the warm metal complements the diamond's inherent glow

The Emery Emerald Halo Semi-Mount Ring 182 This vintage black onyx signetMarket Square Jewelers is excited to showcase our new Art Deco Collection, featuring stunning antique inspired designs. Our semi mount collection uses only the highest quality materials to create these unique and truly timeless pieces. These mountings are perfect for antique cut European, old mine cut diamonds, or even lab grown diamonds! You may choose to set your own stone or select from our wide variety of hand picked gemstones. All mountings are