2. Rhodium
Rhodium is a rare metal that was first discovered in 1803. It is massively produced in Russia, Canada, and South Africa for $2930 per ounce. Perhaps the high value is because of its desirable properties, high melting point, and corrosion-resistance properties. While Rhodium is mainly used in automotive industries, its reflective properties give your jewelry and mirrors a shiny finish.
1. Californium 252
Californium goes for $27 million for one gram- for that amount, it is beyond expensive. Ideally, you wouldn’t come across the gem quickly. Its rarity is one of the factors that contribute to its price. It is primarily used in medicine, Nuclear Physics, and finding oil, silver, and gold mines. Interestingly, only 8 grams have been made ever since its first production in 1951.
