The most popular precious metals are gold and silver. While gold isn’t very cheap, it seems like a bargain in comparison to the world’s most expensive precious metal that sells for around $9,960 an ounce.
Rhodium was discovered in 1803 by William Hyde Wollaston. It is found in platinum or nickel and other members of platinum group. Rhodium is a hard, silvery, durable metal that has a high reflectance. It resists most acids well, and is not destroyed by them. It also rarely oxidizes. At 10 times the cost of gold and even more with silver, it isn’t very affordable, even though more durable, which is why it is ofter used to cover either silver or white gold with a thin layer.