Every diamond is a miracle of time and place and chance. Like snowflakes, no two are exactly alike. Until the middle of the twentieth century, there was no agreed-upon standard by which diamonds could be judged. GIA created the first, and now globally accepted standard for describing diamonds: Color, Clarity, Cut, and Carat Weight. Today, the 4Cs of Diamond Quality is the universal method for assessing the quality of any diamond, anywhere in the world. The creation of the Diamond 4Cs meant two very important things: diamond quality could be communicated in a universal language, and diamond customers could now know exactly what they were about to purchase.
The 4 Cs
As we said, when you get a jewelry appraisal, the gemologist will look at the 4 Cs, but what are they looking for? Clarity – They'll look at the severity of any blemishes or inclusions in the stone. If these flaws are only barely visible under a microscope, the rating goes up, as the stone is considered to have high clarity.Cut – This rating is based mostly on the skills of the person who cut the gem for mounting. Its cut should show off its brilliance. A gemstone with a high rating for its cut will sparkle more than one with a poor cut. Color – Though diamonds are primarily made up of carbon, most of them have some other trace elements. These can change the color of the diamond. A colorless diamond is almost always preferable and more highly rated. If you're having an emerald or ruby appraised, of course, the color rating will differ.Carat Weight – This is just a measurement of the size of the diamond or precious gemstone. Larger gems, of course, are more rare than smaller ones, and are, therefore, more valuable.Your gemstone's value will be based on a combination of its ratings in each characteristic. A large diamond with poor clarity and cut will be worth less than a slightly smaller diamond with great clarity and a superb cut.Jewelry Appraisal If you're interested in having your jewelry appraised for the quality of its gemstones, a gemologist at New York's Accredited Gemological Institute (AGI NY) can help you greatly. Our gemologists are known for giving the absolute best, unbiased appraisals of diamonds, precious gemstones, jewelry, and luxury watches.With specialized, state-of-the-art equipment and the right education, a gemologist can analyze each gemstone. AGI NY employs only the most skilled gemologists, and we use the best equipment and scientific analysis procedures available.