Druzy Black Onyx Ring, Oblong, 925 Sterling Silver, r5Druzy Black Onyx Ring 925 Sterling Silver. Sometimes under special conditions Onyx forms and then quartz crystals are able to grow on top, glittering as they catch the light. This type of formation is called druse or druze. The result in this case a Powerful, Classic, Elegant and Empowering gemstone. The stone is Bezel Set in 925 Sterling Silver in a heavy Signet Style. Black Onyx is known for it's calming confidence and feeling of connection to the