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Similarly, natural diamonds usually have minor imperfections and flaws, such as inclusions of foreign material, that are not seen in synthetic diamonds. Screening devices based on diamond type detection can be used to make a distinction between diamonds that are certainly natural and diamonds that are potentially synthetic.
“Natural diamonds are formed over billions of years, deep within the earth, through a process involving high pressure and temperature—usually in the presence of other minerals and gasses ...
Africa has a large quantity of natural resources, including diamonds, sugar, salt, gold, iron, cobalt, uranium, copper, bauxite, silver, petroleum, natural gas and cocoa beans, but also tropical timber and tropical fruit. Recently discovered oil reserves have increased the importance of the commodity in African economies.
A situation that arises as a result of this is the exploitation of natural resources and labor within gemstone mining operations. Many mines, particularly in developing countries, face challenges such as inadequate safety measures, low wages, and poor working conditions. [ 49 ]
Gold, gemstones (diamonds and sapphires), and industrial minerals are important commodities for the country's export-oriented growth strategy. [1] The country has deposits of coal, opal, gemstones, kaolin, iron ore, soda ash, and tantalum, but only gold is mined in significant quantities.
Natural blue or blue-gray diamonds, common for the Argyle diamond mine in Australia, are rich in hydrogen; these diamonds are not semiconductors and it is unclear whether hydrogen is actually responsible for their blue-gray color. [21] Natural blue diamonds containing boron and synthetic diamonds doped with boron are p-type semiconductors.
The majority of Ghana’s diamonds are exported to international markets, contributing to the country's mining exports. [9] The Akwatia region, located in the Eastern Region of Ghana, is the principal source of diamonds in the country. The area has been known for its diamond deposits since the 1920s, and mining operations have been ongoing ...
However, in reality most gem-sized natural diamonds are imperfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value.