At present, Australia has the largest output. From 1979 to 1986, the diamond production in Australia has been dominant, but the gem grade only accounts for 5% of its production. Australian diamonds are mainly distributed in Bingala and Copton, New South Wales, Western Australia, especially the argle deposit, with a reserve of 550 million carats.
Extended data:
Identification standard of diamonds
There are four main dimensions to measure the rare quality of a diamond, namely, weight (carat), clarity, color and cut, which is also commonly known as "4C standard". Founded by GIA (Gemological Society of America), this standard is the most mainstream diamond evaluation standard in the world, including China.
The standard to measure the beauty of diamonds is beauty. The beauty of diamonds depends on the performance of light. The luminous efficacy of diamonds should be identified by three indicators, namely, brilliant brightness (white light), fire color (colored light) and sparkling flash (flicker). The higher the brightness, fire color and flash grade of a diamond, the higher the beauty of the diamond, and the brighter it will be.
Diamonds are appraised by internationally recognized gem experts, and independent opinions are issued by third parties. Determine the price of diamonds based on 4C standard.
References:
Baidu encyclopedia-diamond