The first is gold, which is one of the most popular precious metals. I believe many friends, especially female friends, like to wear gold ornaments.

Second, jade, mainly because of its high value, is a scarce resource, with very few reserves in the world.

Tritium, also known as overweight hydrogen, is one of the isotopes of hydrogen. Tritium is rarely found in nature and is generally produced by nuclear reaction. It can be produced by neutron bombardment of lithium. Of course, its price is also very expensive, about $30,000 per gram, and about $0.9 million per gram/kloc.

Fourth, diamonds, a diamond ring ranges from tens of thousands to hundreds of thousands, and there are only a few diamonds on it.

5. Tafei stone, it can be said that Tafei stone is the most colorful gem in nature, which is why it is loved by people, but its price is also very high, about 6.5438+0.36 million yuan per gram.

Six, californium 252, about $27 million per gram, this price makes many people flinch, but with the research of scientists, there will be a large number of technologies to produce californium 252 in the future.

Seven, antimatter, dark matter because of its special, it is estimated that at least per gram 100 trillion dollars.