This Necklace By David Yurman Features A Bold 17.8mm Round Black Onyx Centerpiece Surrounded By Pavé-Set Diamonds, Creating A Striking Contrast Of Deep Darkness And Brilliant Sparkle. The Polished Sterling Silver Setting Enhances The Overall Clarity And Modern Elegance Of The Design, While The Diamond Halo Adds Refined Radiance And Visual Depth. The 42Cm Base Chain With A 3+3Cm Adjustable Extension Allows Flexible Styling For Different Necklines And Layering Combinations. A Sophisticated Piece That Blends Monochrome Contrast, Gemstone Richness, And Fine Jewelry Craftsmanship For A Timeless Luxury Look.