Most hand forged Damascus steel blades are made of high carbon steel. It can rust when not cared for properly. You will need to make sure the blade remains clean and dry in order to prevent rust or discolouration.
After cleaning and drying your knife, you should lubricate it with wax or oil to prevent moisture, this will keep you knife rust-free and maintain its etched beauty.
Avoiding abrasives such as rough cloths, metal polishes, steel wool, etc.
Using a soft cloth to dry is best.
Don't store your knife for a long time in leather sheath. Leather can absorb water, which can rust the knife. Use it a little bit once in a while.
