Introduction To The 4’C

1. Diamonds IntroductIon to the 4’c GemsNY

2. the 4’c of dIamonds the 4’c of dIamonds • Cut • Color • Clarity • Carat Weight

3. Cut

4. CUT A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut refers to shape (pear, oval), and also the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance—a poorly-cut diamond is less luminous. The cut of a diamond is the main ingredient in determining how much brilliance and fire that diamond will have. There is a strict range of proportions that a diamond's cut has to meet in order for that diamond to exude maximum brilliance and fire it is capable of. Although different jewelers have different perceptions of what ideal proportions are, there are certain ranges which are accepted as ideal by all. Generally, in order for these ideal proportions to be met, there is a greater weight loss than if the diamond was to be cut to retain the maximum weight, therefore better cut diamonds cost more money.

6. COLOR

7. COLOR A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or color. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. Diamond color grade ranges from D - Z, where D is the whitest (or colorless) and Z is light yellow or brown. The whiter or colorless a diamond is, the rarer it is and thus more valuable it is. • • D-F, colors are viewed as colorless and are very rare, where G-I colors are near colorless and still rare. J-K colors have a very light color but are ideal for yellow gold mountings because diamonds in these mountings still look white because of the surrounding. Colors below K are not advised by GemsNY because they have traces of color which can be detected by an untrained eye. GemsNY carries diamonds in color grades from D-K color only. We don't carry colors below K to ensure you are selecting the highest quality diamonds. •

9. CLARITY

10. CLARITY Diamond clarity is one of the major components in determining diamond value. Clarity in a diamond is determined by the number, type and size of the inclusions when viewed under 10x magnification. Diamonds which are very clean are very much sought after and are quite expensive and rare. Diamonds with VS2 clarity and above are considered "Eye clean". It is best to pair VS2+ clarity diamonds with D-F color diamonds. For diamonds that are SI clarity, for best value it is best to pair with G-I color.

11. CLARITY GRADE

12. CARAT WEIGHT

13. CARAT WEIGHT Carat weight is the unit of measurement that is used by the jewelry industry to weigh all gemstones, including diamonds. One carat is equal to .2 grams or there are five carats in one gram. While the carat weight of a diamond is related to its size, the weight does not measure directly the size of a diamond. To gauge the size of a diamond (visual appearance) it is always better to look at the millimeter measurements as opposed to the carat weight.

14. CARAT WEIGHT

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