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  2. Move over diamonds, these little-known gemstones are heating up

    www.aol.com/move-over-diamonds-little-known...

    In 2015, the auction house Bonhams sold the 50.13-carat Hope Spinel for a world-record £962,500 ($1.22m) — over six times its estimate — helping to catapult the stone into public consciousness.

  3. How Much Is a Diamond Worth? How To Find the Value of Your ...

    www.aol.com/finance/much-diamond-worth-value...

    The weight of a diamond is one of these variables that determines a diamond’s worth and is what the general public is most familiar with. The unit of measurement, called the carat, equals 200 ...

  4. Red beryl - Wikipedia

    en.wikipedia.org/wiki/Red_beryl

    The Utah Geological Survey estimated that one red beryl is found for every 150,000 diamonds. [1] According to Gemmological Association of Great Britain a 2 carat red beryl is as rare as a 40 carat diamond. [13] Red beryl is valued roughly the same price or higher than emerald [12] despite being a hundred times rarer. Its rarity has made it less ...

  5. Black Prince's Ruby - Wikipedia

    en.wikipedia.org/wiki/Black_Prince's_Ruby

    The gemstone at the front of the Imperial State Crown. The Black Prince's Ruby is a large, irregular cabochon red spinel weighing 170 carats (34 g) set in the cross pattée above the Cullinan II diamond at the front of the Imperial State Crown of the United Kingdom. [1]

  6. Spinel of the Great Imperial Crown - Wikipedia

    en.wikipedia.org/wiki/Spinel_of_the_Great...

    In 1838, in the inventory of crown items, the stone under the cross was called a “large ruby”, and in the inventory of 1865 it was already listed as “an irregularly shaped spinel ruby, worth 100,000 rubles”. [15] Since 1967, the crown, and along with it the historical spinel, has been an exhibit of the Diamond Fund.

  7. Diamond (gemstone) - Wikipedia

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

    Since the per carat price of diamond shifts around key milestones (such as 1.00 carat (200 mg)), many one-carat diamonds are the result of compromising cut for carat. Some jewelry experts advise consumers to buy a 0.99-carat (198 mg) diamond for its better price or buy a 1.10-carat (220 mg) diamond for its better cut, avoiding a 1.00-carat (200 ...

  8. List of diamonds - Wikipedia

    en.wikipedia.org/wiki/List_of_diamonds

    A 5.05-carat (1.010 g) Emerald-cut red diamond formerly known simply as "Red Diamond". This is the second-largest known red diamond. It was cut from a 35-carat (7.0 g) piece of boart discovered near Lichtenburg, South Africa. It reappeared in 2007 after a 37-year absence from sight, and was purchased by Kazanjian Brothers Inc. —

  9. Diamond color - Wikipedia

    en.wikipedia.org/wiki/Diamond_color

    In 2009, a 7-carat (1.4 g) blue diamond fetched the then highest price per carat ever paid for a diamond when it was sold at auction for 10.5 million Swiss francs (US$9.5 million at the time) which is in excess of US$1.3 million per carat. [17]

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