The Koh-i-Noor diamond is valued at $2,500,000—a sum which could purchase 590,000 tons of coal. If this diamond was dropt into the depths ot the sea and lost forever, no one in the world would ...

More than half of couples have reported buying a lab-grown diamond for their engagement rings for the first time in history, ...

The process doesn’t produce coal lumps suitable for bad children ... Maybe the technology could make diamond batteries and kill two problems with one stone.

That means spinning off its platinum and diamond businesses after the sale of its coal and nickel mines. Sign up here. CEO Duncan Wanblad also said the company was exploring jointly running its ...