Smith – a senior research scientist at GIA – was examining the diamond for inclusions, chemical hitchhikers from the interior of our planet that can reveal how the crystal formed, and under what conditions. But working with high-value diamonds is a tricky business – ordinarily, it's impossible for researchers to get their hands on the largest specimens. They're sometimes flown around the world to visit potential customers – alas, never scientists.
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สาระน่ารู้ เครื่องดื่มแอลกอฮอล์
