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Diamonds

Diamonds. What are Diamonds??.

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Diamonds

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  1. Diamonds

  2. What are Diamonds?? • Diamond is a colorless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities). It is used as a gemstone, as an abrasive, and on the working edges of cutting tools. Composition: carbon. Formula: C. Crystal structure: cubic. Name derived from the Greek adamas meaning invincible. Relative density 3.50- 3.52.

  3. Types of Diamonds • Pink Diamonds The pink diamond is the world's most rare and valuable diamond.The Argyle mine is the world's foremost source of unrivalled intense pink diamonds, producing 95% of the world's supply. However, an extremely small proportion of Argyle Diamonds production is Pink colour, in fact less than one tenth of 1% is classified Pink.

  4. Blue DiamondsFancy blue diamonds are available in a wide range of shades, from the blue of the sky to a more "steely" colour than sapphire. • Limited quantities of fancy blue diamonds are recovered from the Argyle mine

  5. White diamonds are produced by mines all over the world in a wide variety of shapes and sizes.The white diamonds recovered from the Argyle mine are particularly brilliant and of high quality.

  6. Green DiamondsFancy green diamonds are also available. Usually, penetration of the colour is not very deep and is often removed during the fashioning of the stone. • A limited quantity of fancy green diamonds is recovered from the Argyle mine.

  7. Difference between raw and finished diamond Raw diamond Finished diamond • the rough diamonds have yet to be cut by a professional, to be made into diamonds suitable for aesthetic use in items such as jewelry. The rough diamonds, as the name suggests, will look rough and rugged around the edges, as they are freshly sourced and have yet to be adapted into something beautiful. • The diamond will be much smoother to the touch, will look noticeably cleaner and will gleam under a light source. This is the kind of finished diamond that will be placed in jewelry

  8. Raw diamond Finished diamond

  9. Structure of Diamonds • The diamond cubiccrystal structure is a repeating pattern of 8 atoms that certain materials may adopt as they solidify. While the first known example was diamond, other elements in group 14 also adopt this structure, including α-tin, the semiconductorssilicon and germanium, and silicon/germanium alloys in any proportion

  10. Crystal structure • The crystal structure of a diamond is a face-centered cubic or FCC lattice. Each carbon atom joins four other carbon atoms in regular tetrahedrons (triangular prisms). Based on the cubic form and its highly symmetrical arrangement of atoms, diamond crystals can develop into several different shapes, known as 'crystal habits'. The most common crystal habit is the eight-sided octahedron or diamond shape.

  11. Where are diamonds found?? Natural diamond sources have been discovered in approximately 35 different countries around the World across several continents. Russia, Botswana and South Africa are the world’s major gem quality diamond producers and Australia is the major industrial diamond producer. The most notable diamond deposits are in Africa. Details of world locations are as follows: Africa - South Africa, Namibia, Botswana, the Democratic Republic of Congo, Angola, Tanzania and Sierra Leone India Russia - Siberia South America - Brazil Australia - Northern and Western Australia China United States - Arkansas (Crater of Diamond State Park) Colorado and Wyoming Canada - see

  12. Brief processing of Diamond • First, the specialist analyzes the rough diamond and decides how the diamond will be processed. Then the diamond is marked, cut and polished. Each diamond is unique and the whole procedure is specific for every particular stone. The yield depends above all on the shape and quality of the rough stone. • The video will explain you more

  13. A Presentation by Group 1: Juhi Premjani Rhea Aggarwal Sakal Mathur Malav Nanavati Akashshah Aayush Agarwal

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