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Hence, it can be found in mica schists and in contact with metamorphic deposits of dolomitic marble. Because it is a hard, dense mineral that is resistant to chemical alteration, it can be weathered out of rocks and deposited in river sands and gravels in alluvial deposits with other gem minerals such as diamond, corundum, topaz, spinel ...
The Jordan River or River Jordan (Arabic: نَهْر الْأُرْدُنّ, Nahr al-ʾUrdunn; Hebrew: נְהַר הַיַּרְדֵּן, Nəhar hayYardēn), also known as Nahr Al-Sharieat (Arabic: نهر الشريعة), is a 251-kilometre-long (156 mi) endorheic river in the Levant that flows roughly north to south through the Sea of Galilee and drains to the Dead Sea.
East of the Jordan River Valley, the land surface eroded to a nearly flat peneplain and many Proterozoic sediments were eroded. Before Cambrian sediments began to accumulate quartz porphyry lavas erupted to the surface. Tectonic conditions favored the preservation of Proterozoic sediments in the Wadi al'Arabah as Cambrian sandstones began to form.
The Kimberley diamonds were originally found in weathered kimberlite, which was colored yellow by limonite, and so was called "yellow ground". Deeper workings encountered less altered rock, serpentinized kimberlite, which miners call "blue ground". Yellow ground kimberlite is easy to break apart and was the first source of diamonds to be mined.
The view from the summit provides a panorama of the West Bank across the Jordan River valley. The city of Jericho is usually visible from the summit, as is Jerusalem on a very clear day. The biblical town of Nebo, now known as Khirbet al-Mukhayyat , is located 3.5 km (2.1 mi) away.
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Bahia Emerald [2]; Carolina Emperor, [3] [4] 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US