Rhodium is actually a silver-white steel that is very reflective. Rhodium is rather proof against corrosion, And that's why it is accustomed to plate jewelry to keep a superior end. Rhodium can also be used in higher-functionality optical products for its reflective properties. Ruthenium is probably the platinum group metals, https://precious-metal-investment87406.liberty-blog.com/37274446/5-simple-statements-about-safe-haven-assets-explained