Description Christian Bird designed a collection of ceramic knives with incredible style for the Edge of Belgravia brand, that will become the center of your kitchen world. Their futuristic design and their unique architectural conception will certainly inspire your cooking. Ceramic Onyx series is an awarded collection due to its extravagant cutting performance and its unique industrial design. The series has been featured in various design blogs and design magazines, and it is favorite among many famous chefs. The outstanding zirconium oxide blades, which compared to a diamond are second in hardness, can remain sharp for a very long time compared to other steel knives. When used on a regular base, the blades do not even need to be sharpened. The zirconium oxide blades, the material used for this exceptional knife is sintered in an oven at 1300°C and forged under 300tones pressure. This procedure is giving the blades its outstanding durability in cutting performance and its unique diamond hardness. Set Includes:  Paring knife 4″ | 10cm Utility knife 5″ | 12.5cm Santoku knife 5″ | 12.5cm Chef knife 6″ | 15cm Slicing knife 6″ | 15cm