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A pink diamond just sold for over US$ 14 million – no wonder, when you look at the mysteries behind their chemistry
The Marie-Thérèse Pink, thought to have belonged to Marie Antoinette, was auctioned by Christie’s in New York.
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Heartwarming Process: How Marbles and Granites Are Made from Mountain Rocks
The journey from rough mountain rocks to the smooth, stunning surfaces of marbles and granites is nothing short of ...