When it comes to South African diamonds, everyone must be familiar, but when it comes to Chinese diamonds, many people will be surprised. Can China also produce diamonds?
What are the origins of diamonds? At present, more than 30 countries have diamond resources, and the top five countries in production are Australia, Zaire, Botswana, Russia, and South Africa. The diamond production of these five countries accounts for about 90% of the world’s diamond production. Other diamond-producing countries include Brazil, Venezuela, Angola, Ghana, Namibia, India, China and Canada. China’s proven diamond reserves and production are both around the world’s 10th, with an annual output of 200,000 carats. The main diamond production areas are the Yuanjiang River Basin in Hunan, Mengyin in Shandong, and Wafangdian in Liaoning, of which Wafangdian in Liaoning is currently the largest in Asia. Diamond mine.
In the 1950s, my country first discovered diamond sands with economic value in the Yuanjiang River Basin in Hunan. The quality is good. The gem grade accounts for about 40%, but the grade is low and the distribution is scattered.
In the 1960s, the original diamond mines found in Mengyin, Shandong, had large reserves and high grades, but they were of poor quality. The gem grade accounted for about 12%, and the color was yellow, which was used in many industries.
In the early 1970s, a primary diamond deposit was discovered in Wafangdian, Liaoning, with good quality and large reserves. The gem grade accounted for more than 50%, making it the largest primary diamond mine in China and Asia.
The two primary diamond deposits still being mined are in Wafangdian, Liaoning and Mengyin, Shandong.
Diamond ore deposits are found in the Yuanjiang River Basin in Hunan, Tibet, Guangxi, and the Tanlu faults across the two provinces of Jiangsu and Anhui.
The largest diamond currently found in China is Changlin Diamond, which was discovered by Wei Zhenfang of Changlin Brigade in Shandong on December 21, 1977, hence the name “Changlin Diamond”. She dedicated this gem to the country and became a national treasure of China , Now in the Treasury of the Tibetan Bank. The Changlin diamond weighs 158.786 carats and is octahedral, with a clean, transparent, and yellowish texture. The Changlin diamond weighs 158.786 carats and is 17.3 mm long. It is pale yellow in color, pure in texture, transparent like water, and crystal clear. The crystal morphology is a polymorph of octahedron and rhombic dodecahedron, the specific gravity is 3.52. According to another legend, China’s largest diamond used to be a golden rooster diamond, weighing 281.25 carats, but it was looted by the Japanese during World War II and its whereabouts are unknown.