New discoveries of rare gemstones in Africa are challenging traditional sources making the continent a key player in the gemstone market.
원문출처 : http://www.cnn.com/2016/12/28/luxury/rise-of-the-mozambican-ruby/index.html
원문출처 : http://www.cnn.com/2016/12/28/luxury/rise-of-the-mozambican-ruby/index.html