A 6.24-carat fancy deep blue diamond, was purchased by Moussaieff Jewellers for $12.7 million. 21 jewels by JAR Fetched $7.1 Million at Christie’s Geneva Jewelry Auction ...

“We have been seeing thicker gold bands and diamond cuts like marquise and pear shapes become increasingly ... because they are deep [stones], they always look visually smaller than any of ...

A new international study led by researchers at the Guangzhou Institute of Geochemistry in China has uncovered how carbon ...

The turbulent flow punches a carrot-shaped pipe through the ground, ripping out chunks of deep subsurface rock, including some that are studded with diamonds. But existing research still has a ...