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2. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   ^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...

3. Turquoise - Wikipedia

   en.wikipedia.org/wiki/Turquoise

   Turquoise. Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6( PO 4)4( OH)8·4 H 2 O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.

4. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   Diamond[ a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...

5. 'Antiques Roadshow': diamond and ruby jewelry worth a fortune

   www.aol.com/news/2014-08-12-antiques-roadshow...

   The collection consisted of a ring, a pendant necklace and a bracelet that was worth a lot more than she expected. The appraiser said, "The ring with the fine ruby and the very very white diamonds ...

6. Hope Diamond - Wikipedia

   en.wikipedia.org/wiki/Hope_Diamond

   Estimated value. US$200–350 million. The Hope Diamond is a 45.52 carats (9.104 g; 0.3211 oz) diamond that has been famed for its great size since the 18th century. Extracted in the 17th century from the Kollur Mine in Guntur, India, [ 1][ 2] the Hope Diamond is a blue diamond. Its exceptional size has revealed new information about the ...

7. AOL Mail

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   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

8. Koh-i-Noor - Wikipedia

   en.wikipedia.org/wiki/Koh-i-Noor

   Today, the diamond is on public display in the Jewel House at the Tower of London. The governments of India, Iran, Pakistan, and Afghanistan, as well as the Taliban, have all claimed ownership of the Koh-i-Noor, demanding its return ever since India gained independence from the British Empire in 1947. [16]

9. Jeremejevite - Wikipedia

   en.wikipedia.org/wiki/Jeremejevite

   Jeremejevite. Jeremejevite is an aluminium borate mineral with variable fluoride and hydroxide ions. Its chemical formula is Al6B5O15(F,OH)3. It is considered as one of the rarest, thus one of the most expensive stones. For nearly a century, it was considered as one of the rarest gemstones in the world. [ 5][better source needed]