Blaguna Rajani. Diamonds. February 25th , 2017.
Diamonds are formed under tremendous heat and pressure. These conditions exist at about 150 to 200 km beneath the Earth's surface, where the temperatures are extremely high ranging from 900 C to 1300 C. For millions of years, carbon atoms deep in the Earth's upper mantle have been exposed to these extreme conditions. As a result, these atoms combine their cubic molecular form, and they ultimately form diamond crystals. During volcanic eruptions, these crystals eventually make their way to the Earth's surface through pipes and channels. These passageways contain the magma from the volcano, which rises along with the diamonds, and deposits them on the surface where they are later found and mined. These are known as the primary deposits of diamond. The igneous rock called kimberlite is the most common host of diamonds found in the earliest volcanic pipes.
The simple yet sophisticated lines of marquise diamond engagement rings make them one of the most popular choices for bridal sets as well as other accented rings and solitaires. Knowing what makes this particular diamond shape special and how it affects the other characteristics of the gem is crucial for couples choosing a marquise stone.
There have been rumors that both the Indian and British Governments would sit and decide the fate of the Kohinoor. But nothing seems to have come of it. There are several individuals of both British and Indian descent who claim to be descendants of Maharaja Duleep Singh. They have been vociferously claiming that the Kohinoor be handed over to them. In a recent visit to India in 2013, the British Prime Minister, Mr. David Cameroon stated that it would be illogical to return the diamond now and emphasized that he did not believe in 'returnism'. As of now the diamond seems safe in the crown of the Queen of Great Britain, but only time will tell if this is its final resting place.
The first diamond ring (for engagement) was gifted by Archduke Maximilian of Austria to Mary of Burgundy in the year, 1477.
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