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Buddhist works dating from the 4th century BC describe the diamond as a well-known and precious stone but do not mention the details of diamond cutting. [11] Another Indian description written in the beginning of the 3rd century describes strength, regularity, brilliance, ability to scratch metals, and good refractive properties as the ...
Neolithic Age (new stone era) beginning about 10,200 years ago: flint tools (diagenesis of marine microfossils, microcristalline opal and chalcedony), jade tools (usually nephrite, jadeitite or jadeite-jade is less common), kaolin earth (adobe bricks made by drying of clay), copper, gold, silver and rocksalt.
The process of diamonds being used for drilling ornamental beads dates back to 2nd millennium BCE. Archaeologists working in Yemen have excavated beads with evidences of diamond drilling from 1200 BCE to the 1st century CE from the site of Hajar ar Rayhani, while double diamond drilling from 7th century BCE, archaeologists speculate that the beads were imported from India since no fragmented ...
The diamond is 1,758 carats and weighs 352 grams or 12.39 oz. [1] At the time it was found, Sewelô was the largest diamond in Botswana's history, surpassing the 1,111 carats (222 g, 7.83 oz.) Lesedi La Rona extracted at the same mine on 16 November 2015. The Lesedi La Rona was the fourth-largest diamond ever found, and the third-largest of gem ...
He established a network of diamond merchants in Europe, Africa, the Middle East, and Asia—up to China and the Malay Archipelago. [21] [22] [23] Shantidas Jhaveri was another 17th-century diamond trader. [24] Golconda diamonds were mined from alluvial soils alongside river beds. [25] Mines were usually up to 4 fathoms (7.3 m; 24 ft) deep.
The manuscripts found in the Library Cave include the earliest dated printed book, the Diamond Sutra from 868, which was first translated from Sanskrit into Chinese in the fourth century. These scrolls also include manuscripts that ranged from the Christian Jingjiao Documents to the Dunhuang Go Manual and ancient music scores, as well as the ...
The largest diamond found in more than a century has been unearthed at a mine in Botswana, and the country's president showed off the fist-sized stone to the world at a viewing ceremony Thursday.
An early example is the 3rd-century CE Greek Pseudo-Callisthenes Romance of Alexander that says Alexander the Great once speared a fish, "in whose bowels was found a white stone so brilliant that everyone believed it was a lamp. Alexander set it in gold, and used it as a lamp at night" (Laufer 1915: 58).