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The Cullinan is estimated to have formed in Earth's mantle transition zone at a depth of 410–660 km (255–410 miles) and reached the surface 1.18 billion years ago. [3] It was found 5.5 metres (18 ft) below the surface at Premier Mine in Cullinan , Transvaal Colony , by Frederick Wells, surface manager at the mine, on 26 January 1905.
The Excelsior Diamond is a gem-quality diamond, and was the largest known diamond in the world from the time of its discovery in 1893 until 1905, when the Cullinan Diamond was found. It was found on June 30, 1893, at the Jagersfontein Mine in South Africa , 130 kilometres (81 miles) south east of Kimberley whose fame as a diamond mining center ...
The oldest dated rocks formed on Earth, as an aggregate of minerals that have not been subsequently broken down by erosion or melted, are more than 4 billion years old, formed during the Hadean Eon of Earth's geological history, and mark the start of the Archean Eon, which is defined to start with the formation of the oldest intact rocks on Earth.
Quartz-pebble metaconglomerate (Jack Hills Quartzite), the rock type that contains Earth's oldest dated mineral grains (detrital zircon) Detrital zircons with ages greater than 4 billion years old have been found in these rocks, and a 4,404 ± 8 million year old zircon was found at Erawandoo Hill; [4] this is the oldest dated material originating on Earth; the date is in the Cryptic era of the ...
Lapis lazuli (UK: / ˌ l æ p ɪ s ˈ l æ z (j) ʊ l i, ˈ l æ ʒ ʊ-,-ˌ l i /; US: / ˈ l æ z (j) ə l i, ˈ l æ ʒ ə-,-ˌ l i /), or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.
18. Platinum. Cost: $33.02 per gram Platinum is a beautiful precious metal that is in a similar category as gold and silver. All three of these metals are frequently traded in the global markets ...
Archaeologists claim this pyramid is 27,000 years is old. But some scientists argue the structure can't be that ancient—and that humans couldn't have built it.
The 972 carats (194.4 g) Excelsior diamond, the largest found at the Jagersfontein Mine. The sixth-largest diamond in the world, the Jubilee , found at the Jagersfontein Mine. Jagersfontein Mine / ˌ j eɪ ɡ ər z ˈ f ɒ n t eɪ n / was an open-pit mine in South Africa , located close to the town of Jagersfontein and about 110 kilometres (68 ...