Botswana has unveiled a blue diamond whose value could outstrip that of the storied Hope Diamond: the 20.46-carat, close-to-flawless Okavango Blue.
원문출처 : https://www.cnn.com/style/article/botswana-okavango-blue-diamond-scli-intl/index.html
원문출처 : https://www.cnn.com/style/article/botswana-okavango-blue-diamond-scli-intl/index.html