CLARITY, COLOR, CARAT & CUTWe understand how confusing it can be to choose a diamond. Here are some tips to understanding the 4 C’s – the four variables, Clarity, Color, Carat Weight and Cut are used to determine a diamonds value. UNDERSTANDING THE 4 C’s
Clarity Grading Scale
The diamond shows no inclusions or blemishes of any sort under 10X magnification when observed by an experienced grader. Note: Truly flawless or internally flawless (F or IF on the GIA’s grading scale) diamonds are extremely rare.IF/INTERNALLY FLAWLESS
The diamond has no inclusions when examined by an experienced grader using 10X magnification, but will have some minor blemishes.VVS1, VVS2/VERY, VERY, SLIGHTLY INCLUDED
The diamond contains minute inclusions that are difficult even for experienced graders to see under 10X magnification.VS1, VS2/VERY SLIGHTLY INCLUDED
The diamond contains minute inclusions such as small crystals, clouds or feathers when observed with effort under 10X magnification.SI1, SI2/SLIGHTLY INCLUDED
The diamond contains inclusions (clouds, included crystals, knots, cavities, and feathers) that are noticeable to an experienced grader under 10X magnification.I1, I2, I3/INCLUDED
The diamond contains inclusions (possibly large feathers or large included crystals) that are obvious under 10X magnification.
- Clarity Grading Scale F/FLAWLESS
Color describes the color the dimaond contains. The range of color can go from colorless to yellow with slight tints of yellow, gray or brown. Colors range from intense yellow to brown, blue, green or red are called fancy colors and are rare and therefore more valuable.EGL, GIA COLOR • COMMERCIAL GRADING D, E, F COLORLESS (WHITE) G, H, I, J NEAR COLORLESS (WHITE) K, L, M FAINT YELLOW N, O, P, Q, R VERY LIGHT YELLOW S, T, U, V, W, X, Y, Z LIGHT YELLOW
Carat Weight is the unit weight of the diamond. A carat is further subdivided into a 100 points (0.01 carat+1 point). One carat is equal to 0.20 grams. Value of carat increases with carat size, because larger rough diamonds occur less frequently.
10 facts you need to know before buying a diamond1. Never compromise on the cut as it determines the brilliance of the diamond. 2. Consider only certified diamonds by independent labs like AGS, GIA or EGL 3. Fluorescence — What is good and bad. Know the difference. 4. Be aware of treated diamonds – clarity and color enhancement 5. Only buy loose diamonds 6. Deal with a reputable company and is a member of the AGS – American Gem Society 7. Avoid sales or promotions 8. Know the return policy. 9. Know the upgrade policy. 10. Make sure that everything is written down.
Cut refers to the proportions, finish, symmetry and polish of of the diamond. These factors determine the fire and brilliance of the diamond. Well cut diamonds sell at premium and poorly cut diamonds sell at discounted prices. With the advent of new technology, the cut of the diamond can be determined through the use of the Sarin system, a computerized system which takes accurate measurements and proportions of the diamond in seconds.
Another way of calculating is the Leveridge Gauge. As an example, a round brilliant cut, which has 58 facets, is shown below. Since the quality of the cut is directly responsible for the stones’ beauty, the precision with which the facets are arranged is of prime importance. They determine the amount of light reflected to the eye, called brilliance.