Platinum.

Cost: about $ 60 per gram. Platinum and its alloys are widely used for the production of jewelry. Every year the world jewelry industry consumes about 50 tons of platinum. Currently sold in China each year about 10 million products from platinum with a total mass of about 25 tons. Russian demand for platinum jewelery is 0, 1% of the world level. Platinum, gold and silver - base metals, operating monetary function. However, platinum was used for the manufacture of coins for a few thousand years later, gold and silver. The world's first platinum coins were issued and were in circulation in the Russian Empire from 1828 to 1845. The largest currently existing platinum nugget is "Ural giant" 7 kg 860, 5, was discovered in 1904 on Isovskom mine. Now kept in the Diamond Fund of the Kremlin.