Kadri Janan. Diamonds. August 27th , 2017.
Blue diamonds are extremely rare and that is the reason why blue diamond jewelry are extremely difficult to obtain. The diamond color in colored diamonds are produced when there are chemical impurities or defects in the crystal lattice structure of the diamond. Blue diamonds derive their beautiful blue color due to the presence of boron impurities in it.
Princess cut is equally popular among diamond cutters, as these diamonds retain more crystal weight. According to them, princess cut diamonds retain a major part of the rough diamond, as compared to the round brilliant cut. Almost 80% of the rough diamond is retained in case of a princess cut; whereas, only 50% is retained in a round brilliant cut. So princess cut diamonds are cheaper, when compared to round brilliant cut diamonds. Rough diamonds that come in the shape of octahedron crystals (like two pyramids joined at the base) are used for making princess cut diamonds. In case of other diamond cuts, only a single diamond is made from a rough diamond, whereas two princess cut diamonds can be obtained from one rough diamond. This again means very less wastage of the original rough stone.
Also known as the Second star of Africa, Cullinan II is displayed at the Tower of England. It is a cushion shaped 317.4 carats diamond and is a part of British crown jewels' Imperial State Crown. Cullinan I and II were used in the coronation ceremony of King George V.
The other type of cuts enhance its character. They are the smaller cuts that give a diamond its flair, which can be classified in three parts. The first is the total amount of light reflected from the diamond. The more the light, the shinier the diamond. The second is the diamond's ability to separate light into its different colors from the spectrum. This is usually called the 'fire' of a diamond. The third is the amount of sparkle a diamond has. The more sparkling a diamond is when it moves in light, the more it costs.
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