Triangle Tie Tack. Three grape leaves of 12k rose gold and 12k green gold leaves surrounding a 10k gold cluster of grapes. Gold Triangle Tie Tack comes with gold plated brass pin and clutch. Black Hills Gold Triangle Tie Tack measures 7/16″ x 3/8″ inch. Certificate of Authenticity and Manufacturer’s Lifetime Warranty against Defects in Materials and Workmanship Included. Authentic Black Hills Gold Jewelry get brighter and prettier the more it is worn. Clean our Jewelry with a soft brush, mild soap and warm water.