Rhodium
/ˈrəʊdiəm/
Definition 1 of 1
Pro Tip 1/3Expensive Coating
Rhodium is a high-value metal, so items coated in it, like jewelry, are often more expensive. 
He gifted her a rhodium-coated necklace for their anniversary.
Pro Tip 2/3Industrial Use
Rhodium is not just for jewelry; it's used in industrial settings, especially in car catalytic converters. 
The car's performance improved after they used rhodium in the catalytic converter.
Pro Tip 3/3Corrosion Resistant
Rhodium is prized for not corroding easily; items coated with rhodium don't tarnish quickly. 
This rhodium-plated watch still looks new despite being worn daily.