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  2. Are lab-grown diamonds 'worthless'? Experts weigh in as ... - AOL

    www.aol.com/news/lab-grown-diamonds-worthless...

    Some high-end fine jewelers have gotten on board with the trend. In 2023, jeweler Jean Dousset, the great-great-grandson of Louis Cartier, opened a showroom with “designer” lab-grown diamonds ...

  3. 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]

  4. De Beers - Wikipedia

    en.wikipedia.org/wiki/De_Beers

    International Institute of Diamond Valuation. The International Institute of Diamond Valuation (IIDV) was launched by De Beers Group in March 2016. Operating in partnership with diamond jewellery retailers, it provided a reselling service for all diamonds, regardless of value. [103] [104] [105] In April 2019, De Beers closed its IIDV division ...

  5. Diamond (gemstone) - Wikipedia

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

    In the wholesale trade of gem diamonds, carat is often used in denominating lots of diamonds for sale. For example, a buyer may place an order for 100 carats (20 g) of 0.5-carat (100 mg), D–F, VS2-SI1, excellent cut diamonds, indicating a wish to purchase 200 diamonds (100 carats (20 g) total mass) of those approximate characteristics.

  6. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    The mining and distribution of natural diamonds are subjects of frequent controversy such as concerns over the sale of blood diamonds or conflict diamonds by African paramilitary groups. [131] The diamond supply chain is controlled by a limited number of powerful businesses, and is also highly concentrated in a small number of locations around ...

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