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2. 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 ...

3. 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 ...

4. 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]

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

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

   Well, today, that 3-piece set is valued between $400,000-$450,000. According to The Daily Mail, rubies are the most expensive gems per carat on earth! To get your hands on some rubies and/or ...

6. Gemological Institute of America - Wikipedia

   en.wikipedia.org/wiki/Gemological_Institute_of...

   The Gemological Institute of America ( GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.

7. Charles Lewis Tiffany - Wikipedia

   en.wikipedia.org/wiki/Charles_Lewis_Tiffany

   Charles Lewis Tiffany (February 15, 1812 – February 18, 1902) was an American businessman and jeweler who founded New York City's Tiffany & Co. in 1837. Known for his jewelry expertise, Tiffany created the country's first retail catalog and introduced the English standard of sterling silver in imported jewelry in 1851.