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 Diamond is a colorless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities). It is used as a gemstone,

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Presentation on theme: " Diamond is a colorless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities). It is used as a gemstone,"— Presentation transcript:

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2  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  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 Diamonds Fancy 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 Diamonds Fancy 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 RAW DIAMONDFINISHED 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  The diamond cubic crystal 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 semiconductors silicon and germanium, and silicon/germanium alloys in any proportion crystal structure materials diamondgroup 14 α-tin semiconductorssilicongermanium alloys

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.face-centered cubic

11  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  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  Juhi Premjani  Rhea Aggarwal  Sakal Mathur  Malav Nanavati  Akash shah  Aayush Agarwal


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