![]() ![]() ![]() Both diamonds and white sapphires require to be cut in an entirely different manner, so as to emphasize their individual characteristics.ĭiamonds, in their crude form, are either octahedral, rhombic, cubic, or mackle in shape. Cutting and ShapingĬutting is the process of shaping a gemstone so that its brilliance and beauty is highlighted. ![]() White sapphire is the only one which has no trace element, and is thus considered pure. Trace elements such iron, copper, titanium, chromium, etc., present in their structures give sapphires their different colors, including blue, green, orange, purple, etc. In fact, after diamonds, sapphires are the second hardest gemstones on Earth, being rated 9 on the Mohs scale. Their structure comprises hexagonal crystals of corundum, which makes them extremely hard. Sapphire are a type of the mineral ‘corundum’, which is an aluminum oxide. They are completely free of impurities, and are made of pure carbon atoms. The most sought-after diamonds are the colorless ones. Diamonds are rated 10 (hardest) on the Mohs scale of mineral hardness. This makes diamond the hardest as well as the most thermally conductive material in the world. There exists a strong covalent bond between these atoms. In them, the carbon atoms are arranged in a face-centered cubic-crystalline structure, known as diamond lattice. Structure and Compositionĭiamonds are a metastable allotrope of carbon. White sapphires, in particular, are formed during the metamorphic recrystallization of minerals dissolved in igneous rocks. During earth shifts, this molten magma cools down, resulting in recrystallization of the minerals dissolved in it, which finally leads to the formation of different-colored sapphires. The extreme temperature and pressure there causes rocks and minerals to change form into liquid magma. Sapphires are formed during the metamorphosis of rocks and minerals, which also takes place deep below the Earth’s surface. ![]()
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