Sterling silver and silver-plated
Sterling silver, noble metal with radiant whiteness, naturally oxidizes when exposed to air, developing brown or black hues. To clean it, use a soft non-abrasive sponge soaked in soapy water, then carefully wipe it dry with a soft, clean cloth.
Wood
Wood, living material, is distinguished by its natural variations, grain patterns, and small knots. For precious wood elements (handles, grips, or handles), a damp cloth is sufficient. Then dry carefully with a soft, dry cloth. Avoid abrasive products or detergents, which could irreversibly damage the material.