When someone says “gemstone,” diamonds and rubies probably pop into your head first. There’s no denying that they’re rockstars of the jewelry world. However, apart from them, there’s a whole lineup of ...
The world’s most expensive substances command their prices for very different reasons. Some, like rare gemstones, are valuable because nature produces them in such limited quantities. Others, such as ...
Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Jun 26, 2025, 02:26pm EDT Jun 27, 2025, 05:34am EDT A medieval ...
A groundbreaking study by the Kimberlite Research Group at the University of Cape Town has pinpointed where the world's most ...
Across the hills of Kenya and Tanzania, two gemstones capture the continent’s natural brilliance and enduring mystique: Tanzanite and Tsavorite. Both discovered within a few years of each other in the ...
A Carthage man may have unearthed one of the rarest gemstones in the world — not in a mine, but in his own front yard. Robert Lewis Jr. says he found an unusual black rock just steps from his home ...
CARTHAGE, Texas -- A Carthage man may have unearthed one of the world’s rarest gemstones not in a mine, but in his own front yard. Robert Lewis Jr. said in 2016, he found an unusual black rock just ...
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