* Astronomy

World's second-largest diamond 'found in Botswana'

The world's second-largest gem quality diamond has been discovered in Botswana, the Lucara Diamond firm says.
The 1,111-carat stone was recovered from its Karowe mine, about 500km (300 miles) north of the capital, Gaborone.
It is the biggest diamond to be discovered in Botswana and the largest find in more than a century.
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