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The investment parameter of diamonds is their high value per unit weight, which makes them easy to store and transport. A high-quality diamond weighing as little as 2 or 3 grams could be worth as much as 100 kilos of gold. This extremely condensed value and portability does bestow diamonds as a form of emergency funding.
Bahia Emerald [2]; Carolina Emperor, [3] [4] 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US
The value of a diamond gemstone depends upon colour and quality, as well as weight. As of April 2024 the average price per carat of diamonds of between 1.00 and 1.49 carats was US$4,448. [49] The price of diamonds dropped significantly from a peak in 2022; prices of natural gems in shops dropped by 26% by the beginning of 2025.
Argyle was at times the largest diamond producer in the world by volume (14 million carats in 2018 [1]), although the proportion of gem-quality diamonds was low. It was the only known significant source of pink and red diamonds (producing over 90% of the world's supply), and additionally provided a large proportion of other naturally coloured ...
The company acquired Letšeng diamond mine in 2006, and has since found five of the 20 largest known white gem quality diamonds, elevating the mine to the highest dollar-per-carat kimberlite diamond operation in the world. [4] The company was first listed on the London Stock Exchange in 2007. [5]
These diamonds were routed via countries such as the UAE, allowing Russian-origin diamonds to enter global markets in "mixed origin" parcels. While efforts by the G7 to curb Russian diamond sales faced resistance, some companies, including De Beers, responded to these allegations, whereas others, like Kiran Gems, did not. [10]
The company's controlled manufacturing processes enabled it to produce very high-quality, high-purity, high volume, single-crystal colorless, near colorless and fancy colored diamonds to suit a variety of industrial and gemstone applications. [2]
"Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. [18] More gem-quality sapphires are produced in Montana than anywhere else in North America. [18] Montana sapphires come in a variety of colors, though rubies are rare. [16] [18] [23]