来自MSN4 个月
World's second-largest diamond found in Botswana, could fetch over $40 million
A 2,492-carat raw diamond discovered in Botswana is believed ... In 2019, a 1,758-carat diamond found in the mine was purchased by luxury fashion brand Louis Vuitton. Before that, in 2010, Graff ...
PBS7 年
The Science Behind the Sparkle
Many are colorless, but most are pale shades of yellow; red, orange, green, blue, brown, and even black diamonds are also found. Raw, uncut stones lack the exuberance of jewelry-store gems and can ...
NHK1 年
Russia's invasion puts India's diamond industry on the rocks
About 90 percent of the world's diamonds are cut and polished in India. But the companies processing them rely on Russia for their raw gems, and the knock-on effect of the war in Ukraine is ...