The perfect piece for a powerful, bold look. This 22" tennis necklace is made of black ruthenium-plated sterling silver in a continuous design of extraordinary 5MM black spinel, a rare gemstone believed to repel negativity while providing inspiration and empowerment. Box lock clasp is etched with Bulova signature tuning fork logo on both sides. Ruthenium plating helps enhance durability and preserve the shine on this jewelry.