Diamonds are not rare. Relative to other gemstones, they’re actually pretty common. Scientists have even found ways to make them in the lab from all manner of carbon-containing matter. Like ...

Good Question: How do they make chocolate colored diamonds? by Matt Gephardt. Sat, February 14th 2015 at 12:12 AM. Updated Thu, May 28th 2015 at 10:06 PM. TOPICS: news stories ...

Diamonds are a huge business, with 133 million carats (about 27 tonnes) of rough diamonds worth about $15bn-$16bn (£12bn-£13bn) mined each year, according to Boston consulting firm Bain & Company.