2. Know the 4C's

- Over the years, diamond professionals have developed standards for comparing and evaluating diamonds. These standards are better known as the 4 C's - Carat weight, Color, Clarity, and Cut - which, together, affect the appearance and value of the diamond. A diamond's value is influenced by its rarity. Before purchasing your diamond you should take the time to learn what characteristics influence a diamond's value. Only then can you decide which of the 4C's - Carat weight, Color, Clarity, and Cut - are most important to you. Strive for a stone that offers the best combination of the 4C's.

3. Choose the shape that pleases you - Today's most popular shape is the "brilliant cut," but diamonds come in many appealing shapes. Do not confuse this with Cut. The Cut of the diamond pertains to its proportioning and light performance. The finer the Cut, the more brilliance the diamond will possess. And, after all, that's what you want from a diamond, isn't it?

4. Choose your diamond's color - Remember, the difference in color is minute but the price is not.

5. Choose the Clarity - Most diamonds have blemishes and inclusions. These inclusions are what makes your diamond unique. Diamonds are graded under 10 power magnification, so you might think twice before paying for better clarity that can't be seen with the naked eye. Large inclusions (from I1 quality and below, typically) can affect light performance.

6. Carat weight - Obviously everyone strives to purchase as large a diamond as possible. Remember, a large diamond is not always a beautiful diamond. Make sure you haven't compromised too much on the other 3C's before selecting your diamond. Be especially careful on the diamond's cut. A poorly cut diamond loses its fire and brilliance, therefore looking more like a piece of glass.