The Pros of ZincAn old-fashioned patina. Zinc bears a dull, slightly mottled surface that has more in common with pewter than with chrome or stainless steel. It looks seasoned even when it's new, and it has an inherent warmth that many metals lack. Zinc typically starts out pale gray and develops a slight blue to green cast as it darkens with time and use. Its natural tarnish can be slowed somewhat with a coat of beeswax now and then. Antimicrobial properties. Zinc naturally resists mold, mildew and bacteria. Stain resistance. Although zinc may react with certain substances over time, spills and splatters won't stain it in the way they might with a porous material such as marble or limestone.