The Most Valuable and Expensive Gemstones In The World – Some May Surprise You

Tanzanite

Per carat price: $600 to $1,000
Tanzanite can only be found in Mount Kilimanjaro, Tanzania. It is predicted that its supply would be depleted 20 years from now. This rarity makes it valuable and the price may go higher once the supply is depleted.

The most expensive piece of Tanzanite weighs 20.5 pounds. It was found by a small-scale diamond miner. This miner also happened to find the second most expensive Tanzanite. The miner sold both pieces to the Tanzanian government for $3.3 million.