Rashmi Jameela. Diamonds. June 19th , 2017.
Black diamonds are found only in Brazil and the Central African Republic. Approximately 600 tons of conventional diamonds have been mined, traded, polished since 1900. But not a single black diamond has been discovered in the world's mining fields. The geological settings where diamonds are found or mined are virtually identical with the one exception, the Black Diamond.
You might have heard about cleaning diamond rings with vinegar. A mixture of equal parts of white vinegar and water is used for this purpose. The ring is soaked for 10 to 15 minutes, before brushing with a soft brush. Rinse in plain water and dry the stone immediately.
Nowadays, rapid and violent volcanic eruptions do not happen. It is believed that the eruptions that brought out the diamonds must have occurred long time ago, when the Earth was much more hot than today.
Again, as diamonds are very hard, they can be easily sharpened at the edges. This makes the facets look very sharp on a real diamond. The facets will have a soft and rounded appearance on a fake diamond, as they cannot take on much of the cutting.
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