Approximately 5/8" x 5/8" Stainless steel Onyx stones Whale back closure A brilliant cushion-cut onyx of deepest black sits inside a stainless steel setting, which has been etched on three sides for additional visual interest. A surrounding strip of onyx and whale back closure finishes the look with elegance, and creates this formal wardrobe staple every well-dressed man should own. Includes branded packaging.