Giolla Fhaolain. Diamonds. June 07th , 2017.
Hence, contrary to popular belief, diamonds are not really indestructible. But it must also be noted that, these pure carbon crystals can only be destroyed in the presence of extremely high temperature and pressure.
A typical rose cut diamond has a unique shape and facet arrangement. It has a flat bottom and an elevated pointed dome, with triangular facets forming a point. The dome is generally in the shape of a hemisphere or a pyramid. The number of triangular facets in a rose cut diamond may vary between 12 to 24. Generally it has a lower tier of triangular facets, which in combination with the upper tier, gives the look of a rose bud. The facets in the upper tier are called star facets, and the ones in the lower tier are known as the diagonal facets. Usually, the middle portion of a rose cut diamond has six triangular facets, which meet at a point in the center. The outline of this diamond is usually circular, but there are oval, hexagonal, and pear-shaped domes. The facet arrangement in rose cut diamonds are usually in multiples of six.
Cubic zirconia (CZ) is a synthetic cubic crystalline form of zirconium dioxide (ZrO2), fashioned as a diamond simulant (non-diamond material). At times, even trained gemologists, can be fooled by its imitations. However, the difference between CZ and diamond can be revealed through a careful gemological inspection, using equipment such as a microscope or loupe which is a small magnifying glass, used by jewelers and horologists. CZ holds certain properties that are very close to a diamond. That's the reason it was developed by the Russians to be used in the optics of their lasers. However, the two differ widely on many parameters. Let us see the differences between the two.
The story goes that the first diamond was found by a young boy named Stephanus Erasmus. He found a stone at the DeKalk farm, on the banks of Orange River in South Africa, and gave it to his neighbor named Schalk van Niekerk, who used to collect unusual types of stones. Niekerk gave it to a traveling salesman who showed the stone to the magistrate, Lourenzo Boyes. The stone was displayed at the World Fair in Paris in 1867, and there it was declared to be a diamond and named 'Eureka'. More diamonds were found during this time and this was the start of the history of bloodshed in Africa.
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