"4C" is the standard measure of diamond quality and value. However, what is "4c"? The so-called "4C" is short for four English words which are start with C. They are "Carat, Clarity, Color, and Cut". Just integrated "4C" to identify a gem, you can easily understand the value and quality of a diamond, and Diamond Price = Carat + Color + Clarity + Cut.
Carat: Diamond's weight calculates based on carat. 1 carat equals 200 milligrams and 0.2 grams. One carat is divided into 100 parts, and each part gets one point, 0.09 carat gets 9 points, 0.75 carat gets 75 points. In other similar conditions, as the increasing diamond's weight, its value also increases; but the same weight diamond will have different value for the different color, clarity and cut.
Clarity: Diamond crystallize from the mantle magna in deep of earth. It is inevitable that a variety of miscellaneous sundries and flaws will be contained after millions years geological changes. The color, quantity, size and position of these internal goods in diamonds will have influenced on their clarity. The clarity is usually divided into "LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2, P3" ten levels with 10 times magnifying glass after observe the internal, surface defects and glory.
Color: Diamonds have many natural colors, from precious colorless (white after cutting and grinding), rare light blue and pink to common light yellow, etc. The more transparent and colorless, the more light can pass through. They will colorful after refraction and dispersion. Diamond color's grades are sure after repeated contrast between unrated diamonds and standard color stones by the technical staffs in a professional laboratory environment. The diamond's color is divided into "D, E, F, G, H, I, G, K, L, M, N" 11 levels in order.
Cut: Diamond's brilliance is attributed to the unique high refraction and dispersion. This kind of stone is the hardest material, and difficult to destroy and damage. It will show eternal glory after cutting and grinding. Take the diamond up and stare at the top light, the exquisite diamond will show perfect brilliance. The cut is divided into "perfect, good and ordinary" 3 levels.
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