The discovery of two diamonds originating from the depths of the Earth's mantle reveals a chemical coexistence that scientists had until now deemed unimaginable. These precious stones, formed ...

Very few gems can withstand the intense pressure of Earth's mantle, but some require it to crystallize. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Sparkling diamonds and verdant emeralds are some of the most coveted and priciest gemstones. But which precious stones are rarer: diamonds or emeralds? In terms of total known deposits, emeralds are ...

The precious artifacts snatched from Paris’s Louvre Museum on Sunday include an emerald necklace gifted by Napoleon to his ...