Simply sign up to the Tiffany & Co myFT Digest -- delivered directly to your inbox. It is time to redefine one of the best-known clichés in the English language. “A rough diamond” imputes true beauty ...

A diamond rush that brought thousands of impoverished South Africans to a village with picks and shovels turns out to have been sparked by very common and not very valuable quartz crystals. “The tests ...

Kwa-Zulu Natal, South Africa — As word spread that there were diamonds to be found beneath the soil in a tiny, rural village in South Africa's Kwa-Zulu Natal region, thousands of people descended with ...

Lab-grown diamonds can cost up to 85% less than natural diamonds, according to Quartz. Additionally, the average wholesale ...

The hopes of thousands who rushed to a rural South African village last week in search of diamonds have been crushed, after government officials said Sunday that the stones were only quartz, which ...