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Diamond Quality |
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The cutThe cut of a diamond refers to its proportions. It is one of the most important factors to be considered while choosing your diamond. It is an aspect which is directly influenced by man. The other three are influenced totally by nature. The cut of a diamond should not be confused with its shape. Shapes are cut from the original rough diamond, and whatever the shape, a well-cut diamond is always better able to reflect light. Diamonds are usually cut with 58 facets, or separate flat surfaces. These facets are placed at precise angles to each other. This relationship is designed to maximize the amount of light reflected through the diamond and to increase its beauty. Rough stones can be cut to their maximum weight and monetary value but loses some "brilliance and "sparkle". Similarly rough stones can also be cut into the most beautiful stone, despite heavy weight loss and lowered monetary value. The cut or proportions of a diamond is measured in percentages relative to the diameter of its girdle. The girdle diameter is always considered to be 100%. Supposing the Girdle diameter is 100%, the table is 5.6mm and the total depth is 6.1mm. Thus the diamond has a table of 56% and depth of 61 When a diamond is cut to proper proportions and ligh is reflected from one facet to another and then dispersed through the top of the stone. Within the well cut standards are the ideal, excellent and very good categories. Ideal Cat: This cut combines the best in brilliance and fire. Excellent Cut: Exhibits gret beauty yet with a slight flexibility of percentages. Very Good Cut: This range of cut balances precise proportions and price consideration. Deep Cut: If a diamond is cut too deep, light escapes through the opposite side of the pavilion. The clarity scale is a measure of the severity of those imperfection or inclusions as it is known in the trade industery. In addition to internal inclusions, surface irregularities are referred to as blemishes. These two categories of imperfections-inclusions (internal) and blemishes (external)-make up clarity. The fewer the imperfections, the rarer and more valuable the diamond. Clarity is graded using a very precise and complex method of evaluating the size, location, and visibility of inclusions. Clarity is a measure of internal structural imperfections called "inclusions". Grades of clarity, which are mostly those used by are: FL-Flawless: Shows no inclusions or blemishes of any sort under 10 x magnifications when observed by an experienced grader VVS1, VVS2 – Very very Slightly Imperfect: Contains minute inclusions that are difficult even for experienced graders to see under 10x magnification. VS1, VS2 - Very Slightly Imperfect: Contains minute inclusions such as crystals, clouds or feathers when observed with effort under 10x magnification I1,I2,I3, Imperfect: Contains inclusions such as large feathers or large included crystals, which are obvious under a 10x magnification and may affect transparency and brilliance. SI1, SI2 - Slightly Imperfect: Contains inclusions such as cavities, knots clouds, feathers and included crystals which are noticeable to an experienced grader. Shallow Cut: With a shallow cut,light escapes through the pavilion before it can be reflected. The Clarity of a diamond refers to how clear, or "clean" the diamond is. Diamonds have imperfections which are present in it's rough state. |
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