ҮНЭТ ЭРДЭНИЙН ЧУЛУУ | Natural history museum of Mongolia
This stone is the most valuable and hardest mineral in the world. Its hardness is 10 on the Mohs scale. The value of a diamond depends on the weight of the stone. A maximum of 3-4 carats will be mined from 1 ton of ore. 1 carat diamond can cost up to $ 10,000 depending on the quality.