Floyd & Green Jewelers | Diamond Education


The process of selecting a diamond may seem overwhelming, but understanding the characteristics of a diamond are quite simple.

If you know the FOUR C’S—CUT, COLOR, CLARITY & CARAT --- surprising someone with the perfect diamond will be much easier!

The Floyd & Green team is composed of GIA-certified diamond specialists who can make the selection process enjoyable and give you peace-of-mind that the diamond you chose is the best quality and value for your budget.


The quality of a diamond cut is the most crucial characteristic of a diamond. There are six grades of cut: excellent, ideal, very good, good, fair & poor. A great cut provides brilliance or “sparkle.” The diamond’s cut refers to the qualities of the diamond like its finish and angles.

When a diamond cut is done correctly, light travels through it easily, maximizing its sparkle. A good cut showcases the diamond’s color and draws attention away from its flaws. If a diamond is not cut properly, light escapes and leaks out the bottom or sides, dulling the stone.


Color refers to the “whiteness” or absence of color in a diamond. The composition of a diamond determines its color, which does not change over time. As with cut, a colorless diamond allows light to travel through it, emitting more sparkle and brilliance. The whiter the diamond, the higher its value.

Jewelers use the GIA color scale when rating diamonds. The scale begins with “D” being colorless and goes to “Z” measuring noticeable color---traces of light yellow to brown. Diamonds graded from D-F are often the most sought after and valuable stones. If your budget does not allow for a diamond within that range, you can also find good diamonds in lower grades. While these diamonds may not be colorless, they show no color to the untrained eye.

When selecting the diamond cut, also consider the setting. If you prefer a platinum or white gold setting, choose a high color grade diamond to match the whiteness of the metal. If you decide on a yellow gold setting, slightly low grade diamonds from “J-M” can also look great. When the right setting is selected, the lower color can be camouflaged.


The clarity of a diamond is the least likely characteristic to impact the cost of a diamond. Clarity refers to the internal characteristics of a diamond, known as inclusions, as well as its external characteristics, known as blemishes. Inclusions are naturally occurring, such as cracks and air bubbles, while blemishes occur when the diamond is cut. A flawless diamond is very rare and is one that has no inclusions and blemishes. The clarity grade of a GIA –certified diamond is proof of its identity because no two diamonds have the same inclusion plot. In other words, no two diamonds are exactly alike.

When a diamond is graded, special lighting and magnification equipment is used to evaluate characteristics. Many flaws cannot be seen without this equipment and a trained eye. When buying a diamond, look for one that has no imperfections to the naked eye.


Carat measures a diamond’s weight and estimate its size. One carat equals 0.2 grams or 200 milligrams. A high carat weight does not necessarily mean the diamond will look larger. Even diamonds of the same weight can differ based on other factors like cut, which can alter the perceived size. That’s why two one carat diamonds sitting next to each other can look to be different sizes. Some diamonds have a larger surface area while others can be deeper.

Because of the rarity of larger diamonds, they are priced higher. The price and value of a one-carat solitaire diamond ring is more than a ring with smaller diamonds making up the same carat weight. When selecting diamonds, chose ones with a highly-scored cut since it will be more proportional. When comparing diamonds, it’s a good idea to scrutinize them side by side so you can easily determine what you are getting.