Swarovski bracelet chain

Swarovski necklace and accessories? (The items that come with it): If you order it without accessories, it comes: a black box without the brand logo, ____ if you order it with gift accessories: its accessories: the brand box, your packaging, the brand accessories, large card. How do I care for it? I do not expose it to perfumes and chemicals, I do not expose it to water when washing and ablution, I do not expose it to humidity and keep it inside the box. Metal: stainless steel. What is stainless steel? Stainless steel (resistant to rust) what is stainless steel?