To care for marble decorative objects, dust regularly with a soft, dry cloth. Clean with a damp cloth and mild soap, avoiding acidic or abrasive cleaners that can damage the marble's surface. Wipe up spills immediately to prevent staining, as marble is porous and can absorb liquids. Avoid placing in direct sunlight, as this may cause discoloration over time. For added protection, consider applying a marble sealer periodically.