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Are diamonds forever in Botswana?
1 day ago · Botswana's Orapa mine is the largest diamond mine in the world in terms of value and quantity of carats produced annually. Estimated to have produced over 11 million carats in 2013, with an average price of $145/carat, the Orapa mine was estimated to produce over $1.6 billion worth of diamonds in 2013.
56 minutes ago · A Harry Winston sapphire and diamond necklace , a pair of sapphire and diamond earrings of 15.04 and 13.03 carats, and a pair of Kashmir sapphire and diamond ear clips weighing 2.48 and 2.68 carats are estimated to fetch up to US$260,000 (HK$2 million), US$240,000 (HK$1.8 million), and US$100,000 (HK$783,010), respectively. For those seeking ...
1 day ago · Astronomers have found the most massive stellar black hole in our galaxy, thanks to the wobbling motion it induces on a companion star. This artist’s impression shows the orbits of both the star ...
1 day ago · Toronto. Tallest freestanding structure in the world 1975–2007, and the world's tallest tower until 2009; tallest in the western hemisphere. 4. Ostankino Tower. 540.1 m (1,772 ft) 1967. Russia. Moscow. Tallest freestanding structure in the world, 1967–75; tallest in Europe.
1 day ago · Largest and heaviest animals. The largest animal currently alive is the blue whale. The maximum recorded weight was 190 tonnes for a specimen measuring 27.6 metres (91 ft), whereas longer ones, up to 33.6 metres (110 ft), have been recorded but not weighed. [1] [2] [3] It is estimated, this individual could have a mass of 250 tonnes or more.
1 day ago · 1 × 1010 [47] There are actually two black holes, orbiting at each other in a close pair with a 542-day period. The largest one is quoted, while the smaller one's mass is not defined. [47] Black hole of central elliptical galaxy of RX J1532.9+3021. 1 × 1010 [48] QSO B2126-158. 1 × 1010 [23] – 4.9+1.13.
1 day ago · Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 states and the Federal District. It is the only country in the Americas to have Portuguese as an official language.
