About Diamonds

About Diamonds

In mineralogy, Diamond (from the ancient Greek (ad.
The diamond is the second most stable form of carbon, graphite; However, the rate of conversion of diamond to graphite negligible environmental conditions.
The diamond has specific famous as a material with superlative physical characteristics, many of which from the strong covalent bond between the atoms tribes. In particular, the diamond has the highest hardness and thermal conduction ability of all materials. These properties define the main industri ë le application of diamond in cutting and polishing tools. The diamond has remarkable optical characteristics.
because of their extremely rigid crystalline structure, it can by few types of impurities such as boron and nitrogen are polluted.
Combined with his great transparency (to a wide band gap of 5 answers.
eV 5), this results in the appearance of the clear and colorless most natural diamonds. The small amounts of defects or impurities (roughly a part per million) cause a yellow (nitrogen), Brown (crystalline defects), green, violet, pink, black, orange or red color of Blue Diamond (boron),. The diamond also has a relatively high spread, I. capacity to light of different colors to spread, that results in his distinctive Sheen. His excellent optical and mechanical properties, combined with an efficient ë nte marketing, make the most popular gemdiamant. The majority of natural diamonds is formed at high temperature and high pressure within the mantle of the Earth at depths of 140 km-190 km. The minerals that contain carbon to the source of carbon to provide, and find the growth during periods of 1 to 3. 3 billion years, what to about 25% to 75% of the age of the Earth answered. The diamonds are placed close to the surface of the Earth by deep volcanic eruptions by a magma, which cools in igneous rocks that are known kimberlite and lamproitas. The synthetic diamonds can also in a process of high pressure are produced at high temperature and that on conditions in the mantle of the Earth simulates. An alternative, and the completely different technique, his chemical vapor deposit. Some different materials to the diamond, including zircon and silicon carbide are often referred to as diamond simulants, resembling the diamond in appearance and many properties. Special gemol. The name diamond is derived from the ancient Greek display. However, people think that the diamonds were recognized, and for the first time in India were extracted, where significant alluvial deposits of the stone many centuries ago along the rivers Penner, Krishna and Godavari were found to be. He is considered to be proven that the diamonds in India at least 3000 years are known, and yeast that they knew 6000 years ago. The diamonds are treasured as gemstones since their use as religious icons in ancient India have been. The use in engraving tools also dates to early human history.
The popularity of diamonds is since the 19th century due to increased supply, improved techniques to cut and shine, growth in the world economy, and innovative and successful advertising campaigns. In 1813, Humphry Davy used a lens to the rays of the Sun on a diamond in an atmosphere of oxygen the emphasis, and showed that the only product of the combustion was carbon dioxide, test that the diamond was compiled from carbon. Later, he showed that, in an atmosphere devoid of oxygen, the diamond in graphite is converted. The most familiar usage of diamonds today is as gemstones used for adornment, a use be used that dates back to ancient times. The spread of white light into spectral colors is primary gemol. In the 20th century, the experts in the field of Gemology methods developed to diamonds and other gemstones based on the key features of its value be based to classify as gem. The four attributes, which are informally known as the four Cs are now used on a common way as the basic descriptors of diamonds: these are carat, cut, color and clarity (weight, size, color and purity).
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