Men's sterling silver Kali Hi-Way cufflinks by John Hardy. John Hardy’s Kali Silver line is themed after the water-smoothed stones lining Bali's riverbeds. Professional Balian artisans take pure sterling silver and cut it into natural stone shapes. These stone shapes are then set in a free-form pattern to create an organic yet refined look. A traditional form of self-expression, this set is a John Hardy classic.