nickel is a chemical pure industrial use or in metal alloys corrosion resistant stainless steel

precious stones geologists pentlandite cobaltite sulphide mining titanite nugget raw material heap iron ore wealth chromium brilliant silver metallic texture nature shiny alloy metal chrome luxury pure basic industrial chemical element grey expensive mineral melter abstract quartz high purity isolated geology rock chemistry nickel stone nickels stained element use alloys corrosion resistant stainless steel