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what is the most valuable stone

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Blue diamond

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  • What are the 10 most valuable gemstones in the world?

  • 10 Most Valuable Gemstones in the World. 1 Tanzanite鈥?1,200 per carat. (Image Courtesy of Geology) 2 Black Opal鈥?9,500 per carat. 3 Red Beryl鈥?10,000 per carat. 4 Musgravite鈥?35,000 per carat. 5 Alexandrite鈥?70,000 per carat. More items

  • What is the most expensive stone in the world?

  • The largest example of an Alexandrite stone found to date can be found in the US, at the Smithsonian Institute and is a whopping 65.08 carat gem valued at over $4 million. 5. Emerald

  • What are the most expensive minerals?

  • Derived from the world 鈥減latina鈥?that鈥檚 translates into 鈥榣ittle silver鈥? platinum is one of the most expensive minerals in the world. It鈥檚 an extremely scarce metal that possesses some unique qualities, making it a highly valuable precious metal.

  • What is the most valuable black opal in the world?

  • The largest, and most valuable black opal in the world, a gemstone known as 鈥榯he Royal One鈥?weighs in at a huge 306 carats and is valued at just over $3 million. It was discovered by a miner who kept it a secret, hidden in his home, for fourteen years before he decided to part with it.

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