The company, which recently graduated from NYC's Techstars incubator program, is currently raising funding. To date, the duo's biggest sell has been a $70,000 diamond, sold over a text message ...

A giant 709-carat diamond unearthed in Sierra Leone has sold at auction in New York for $6.5m (£4.8m ... before the auction on Monday that selling the diamond to middlemen would not have ...

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