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  2. Diamond (gemstone) - Wikipedia

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

    Oddly enough, diamonds graded Z are also rare, and the bright yellow color is also highly valued. Diamonds graded D–F are considered "colorless", G–J are considered "near-colorless", K–M are "slightly colored". N–Y usually appears light yellow or brown. In contrast to yellow or brown hues, diamonds of other colors are more rare and ...

  3. Diamonds aren't as rare as you might think, scientists say - AOL

    www.aol.com/finance/2015-11-04-diamonds-arent-as...

    New research has led scientists to believe that diamonds may actually be easier to acquire than previously thought, and less expensive as a result. Diamonds aren't as rare as you might think ...

  4. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    Diamonds can be sold already set in jewelry, or sold unset ("loose"). According to the Rio Tinto, in 2002 the diamonds produced and released to the market were valued at US$9 billion as rough diamonds, US$14 billion after being cut and polished, US$28 billion in wholesale diamond jewelry, and US$57 billion in retail sales. [110]

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

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

    In 1965, California became the first state to name an official state rock. A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as the state's official stone.

  6. Rare cache of pink diamonds formed when a supercontinent ...

    www.aol.com/research-may-offer-clue-search...

    Pink diamonds are extremely rare and coveted — a now-closed mine in Australia has been the source of 90% of the colored gemstones. Polished pink specimens of the highest grade can sell for tens ...

  7. What Are the Key Differences Between Lab-Grown and Natural ...

    www.aol.com/key-differences-between-lab-grown...

    A diamond can be anyone’s best friend, and whether you’re looking to purchase the stone as an anniversary gift, a birthday present, or simply just because, there are so many shapes, sizes ...

  8. List of diamonds - Wikipedia

    en.wikipedia.org/wiki/List_of_diamonds

    Discovered in 2015, it is the 5th largest diamond ever discovered at the Crater of Diamonds State Park, Arkansas Identified as a Type IIa crystal, the 8.52 carat diamond was cut and polished by Mike Botha into a custom-designed 4.605 carat Triolette shape during a week long event in North Little Rock and was graded a D IF, 0 Polish & 0 Symmetry ...

  9. Herkimer diamond - Wikipedia

    en.wikipedia.org/wiki/Herkimer_diamond

    Herkimer diamonds are double-terminated quartz crystals discovered within exposed outcrops of dolomite in and around Herkimer County, New York, and the Mohawk River Valley in the US. [ 1 ] [ 2 ] They are not diamonds ; the "diamond" in their name is due to both their clarity and well-formed faces.

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