How to Grade a Diamond

Clarity, color, cut and carat are the 4 main aspects used to grade a diamond. These 4 factors are often referred to the "4 C's." It is important when choosing a diamond to know how to grade a diamond. You do not need to become a gemologist to grade a diamond. If you know how to assess each of the "4 C's," you can feel comfortable grading and purchasing a diamond.

Step 1:

The first step in grading a diamond (or several diamonds) is to make an appointment with an experienced jeweler to grade diamonds to purchase. Ask to see a variety of diamonds in different shapes and sizes. Explain to the jeweler what you are hoping to accomplish. Maybe you are purchasing a diamond for an engagement ring, or to add to a necklace for a loved one. If you have a piece of jewelry in mind, let them know you will be bringing this when you come to the appointment.

Step 2:

When grading diamonds you can only select loose diamonds to grade and review. Once a diamond is mounted in a setting, even trained gemologists cannot always tell the difference in colors and clarity.

Step 3:

Once you are at your appointment and have diamonds in front of you, select a diamond cut. Diamond cuts come in several shapes including round, square, rectangle, etc. The shape of the diamond will also affect the look and sparkle of the diamond, so look for exact, geometric cuts when grading. Picture how the diamond will look in the setting you wish to place it in. Be sure the setting can hold the diamond you wish to purchase.

Step 4:

Once you have selected the shape of the diamond, measure the weight of the diamond you are grading. This weight of the diamond is referred to as the carat weight. Remember that one diamond may appear bigger but have a smaller carat weight based on the way it was cut.

Step 5: