Introduction: The 4 Cs Carat, Cut, ciarity and colour determines the quality of the diamond. Let us lean more about the first characteristicd CARAT. |
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A carat is the unit of weight by which a diamond is measrured.One carat is equal to 0.2 grams. One carat is defined as exactly 200 milligrams (about 0.007 ounce) The point unit -equal to one one- hundredth of a carat (0.01carat,or 2 mg)-is commly used for diamonds of less than one carat. All less being equal.The value of a diamond increases exponentially in relation to carat weight since large diamonds are both rare and more desirable fpor use as gemstones. |
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Large diamonds are extremelyrare and therfor have greater value per carat. For that reason, the price of a diamond rises with its size. Deceding on carat size is really about striking balance between size and quality, in the right budget. It you prefer large jewellery items, and you are working within a budget, you can still find a large diamond of excellent quality gem by selecting one which is graded slighhtly lower of color and clarity. |
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| 1st C carat: |
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Carat weight is the obvious factor in determining the price of a diamond. However, bigger is not always better in the diamond business. If there are two diamonds of equal weight can have very unequal, depending on their cut, color and clarity. The weight of the diamond ismeansored in carat. The metric carat equals 0.200gram. |
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| What is carat? |
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Carat is a unit of measuring weight of the gemstone including diamonds. It does not mean size. one carat is equal one fifth of a gram (0.2 gram) or 200 mg. Onecarat diamond is as small as 5.8 mm in diameter. Others can be as large as 7.00 mm or 6.50 mm is one of the best.Autually the idea of buying diamonds by carat size was originally promoted as status smbol. In popular terminology one carat is equal to 100 points or 100 cents, 142 carat is eqyal to 1 Ounce and 4 grains is equal to 1 carat. |
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Introduction: Cut is probably the most important, and most challenging of the four Cs to understand. The brillince of a diamond depends heaving on its cut. In order to best utilize a diamondgemstone'ssuperlative material roperties, a number of diffiernt diamond cust have been developed. A diamond cut constitutes a more or less symmetrical arrangement of facets which together modify the shape and appearance of a diamond crystal. Diamond cutters must consider sevral factors, suchy as the shape and size ofr the crystal, when choosing a cut. the practical history of diamond cust can be traced back to the middle Ages, while their theoretical basis was not developed until the turn of the 20th century. Design creation and innovation to the present day: new technology-notably laser cutting and computer-aided design-has enabled the development of cuts whose complexity, optical performance, and waste reduction were hitherto unthinkable. |
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Diamond's beauty lies its complex relationship with light: how light strikes the surface, how much enters thye diamond ,and how,and in what form light returns to your eye. Apolished diamond's proportions affect its light performance,which in turn affects its beauty and overall appeal. Diamonds with good proportions optimize the interaction with light, and have good brilliance, fire, and scintillation. |
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Apart from the general shape of the diamond,"cut" refers to the reflective qualities of the diamond . A good cut gives a diamond its brilliance, i.e the brightness that seems to come from the very heart of a diamond. when a diamond is well-cut, light enters through the table and travels to the pavilion where it reflects from one side to the other before reflecting back out of the diamond through the table and to the observer's eye. This light results in brilliance and it's this flashing, fiery effect tha markes diamond so mesmerizinng. in poorly cut diamond, the light that entersn through thr table reaches the facents and theen 'leaks'out from the sides or bottom of the diamond rather than reflecting back to the eye, causing the stone to appear dark.Less light reflected back to the maximum amount of brilliance. The most important factor are woh the depth comparres to the diamond, and how the dimmeter of the table compares to the dimeter of diamond. |
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There are different Cut Scales ranging from excellent to Poor. Different gem testing labiratories have different standards to grade acut of the standarde round brilliant diamonds. General cut quality grades are Excellent, Good, Shallow and Poor. |
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Importance of cut |
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Gemologists consider cuting quality to the most important diamond characteristic because even if a diamond has perfect color and clarity, a diamond with a poor cut will have reduced brilliance, cut is not shapa,i.e. pear ,round, oval. Cut refers to the quality of the proportioning, polish ,and symmetry. When a diamond is cut to good proportion,light is reflected from one to another facet and dispersed through the top of the diamond. Diaomnds can be cut to different shapers but it is the precision with which the facets are polished on to a diamond, which allows it to capture light and release its brilliance and fire. It is considered. that 98% of light of a fashioned diamond depends on cut. CUT which is one of four C is absolutely under human control. How much CUT can affect a diamonds coulld be better understood by this example. A well proportioned and symmetrically good fashioned I1 diamond may look bette than a poor proportionned and symmetrically bad polished SI1 clarity diamond. |
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Shape preferances |
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Choise of shape differ person to person. One may prefer a heart shape diamond for the ring, the other will like some other shape and so on. Generally, majority of customers perfers to have round brilliant cut diamond. The ratio of round and other fancy cut diamond used is 70:30.
Cut, proprtion, polishing and symmetry are of utmost importance. As these factors determine the lifi,brilliance and dispersion of light in the diamond. If these cutting |
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factors fall below stadard, the appearrance of the diamond will be adversely affected. |
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The cut of a diamond refers to its proprtions. Of the 4Cs, the cut is the aspect most directly influenced by man. The other three are dictated by nature. Quite often the cut of a diamond is confused with its shape. Diamonds are cut into various shapes depending upon the original from of the uncut diamond, which is referred to as "rough." Whatever the shape, a well-cut diamond is better able to reflect light. |
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A diamond's ability to reflect light determines its display of fire and brilliance. Diamonds are usually cut with 58 facets, or separate flat surfaces. These facets follow a mathematical formula and are placed at precise angles in relation to each other. This relationship is designed to maximize the amount of light reflected through the diamond and to increase its beauty. |
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| Number of custs(fashioned diamond shape) in existence ta data |
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To data there are more than 400 cust (fashioned diamond shape) are available.This number increaseing day by day because most manufacturing companies vave their own jewellery manufacturing unit and they always inted to intruduce maximum number of cut diamond to their customer. Sometimes they make some change in the old existing cut and produce them to their customer as a new shape. In this process alot of old cut diamond design has got changed. |
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Technology and research and development are driving this trend forward. Each and every diamond manufacturing company wants to promote and market their diamonds. One of the way to convey the clients and customers that the company innovative and focused on setting up new trends is to introduce a new cut. It also helps to create a niche market as that shape is novel and unique. So nowadays, we are finding an increasing number of innovative cuts in the market. |