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  2. Golconda diamonds - Wikipedia

    en.wikipedia.org/wiki/Golconda_diamonds

    The pink, cushion-cut, 34.65-carat Princie Diamond used to be part of the Jewels of the Nizams of Hyderabad; it was auctioned in 2013 by Christie's and sold for US$ 39.3 million, which is the highest-recorded auction price for a Golconda diamond and a world record for US$ 1.1 million per carat. [87]

  3. 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 ...

  4. Golconda diamonds mining and trading - Wikipedia

    en.wikipedia.org/wiki/Golconda_diamonds_mining...

    The art of macle, which is a form of rough diamond used to produce jewelry, was first developed in the Golconda region. [9] Of the 38 diamond mines in India at the time, 23 were located in the Golconda Sultanate, of which the Kollur Mine was prominent where 60,000 workers were employed at once, making Golconda the "Diamond Capital" of the past ...

  5. 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.

  6. 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. —

  7. Hope Diamond - Wikipedia

    en.wikipedia.org/wiki/Hope_Diamond

    The Hope Diamond is a large, 45.52-carat (9.104 g; 0.3211 oz), [a] [7] [8] [9] deep-blue diamond, studded in a pendant Toison d ’or. [1] It is a dark greyish-blue color under ordinary light due to trace amounts of boron within its crystal structure, and it exhibits a red phosphorescence under exposure to ultraviolet light.

  8. Diamonds as an investment - Wikipedia

    en.wikipedia.org/wiki/Diamonds_as_an_investment

    Stones near the top of a size band (or rarer fancy coloured varieties) tend to be uprated slightly. Some of the price jumps are related to marketing and consumer expectations. For example, a buyer expecting a 1 carat (200 mg) diamond solitaire engagement ring may be unwilling to accept a 0.99 carats (198 mg) diamond. [citation needed]

  9. Tavernier Blue - Wikipedia

    en.wikipedia.org/wiki/Tavernier_Blue

    Below the 107 carats (21.4 g) spinel Côte de Bretagne hangs the French Blue diamond and the fleece itself, set with hundreds of yellow diamond replicas. The Tavernier Blue was the precursor diamond to the Blue Diamond of the French Crown (aka the French Blue). Subsequently, most scholars and historians believed that it was re-cut and, after a ...

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