Sterling Silver Black Spinel Twisted Bar Pendant Necklace. 0.33 Carat Total Gemstone Weight. This pendant comes with an 18 inch sterling silver chain as shown. Alternate chain length, weight, or style options are available. Tantalizing tendrils of hammered sterling silver and glossy black spinel gently intertwine to create a gracefully curving bar pendant. This unique necklace boasts dynamic texture and edgy black stones for a one-of-a-kind adornment.