Buying guide on diamond necklace

First of all, you should know the Four Cs including cut, clarity, color and carat.
Cut is the diamond's reflective qualities, not the shape. A good cut is most important to a diamond’s brilliance. The angles and finish of the gem are what determine its reactions to light.
Clarity refers to the presence of diamond while identifying characteristic. Inclusions and surface flaws are two types of flaws.
Color: when it comes to clear diamond necklace, color of diamond is very important. Color is also graded on a scale, from colorless to light yellow.
Carat is a kind of measurement on diamond. A carat is a unit of measurement used to weigh a diamond. One carat equals 200 milligrams or 0.2 grams. Please note that "carat" is different from "karat," which is the rating of the purity of gold.
Secondly, before you choose a diamond necklace, you should according to your dress styles, skin color, and your face shape. For instance, choose the diamond necklace with appropriate length to match with your dress. Generally, you should look for contrast with the shape of your face--i.e., choose a rounder style if your face is angular and a V-shape if your face is round.
Diamonds necklace is popular because it is incredibly durable, being the earth's hardest substance, and because good quality diamonds are some of the most brilliant of all precious stones. With the two methods mentioned above, you will find it is helpful a lot in diamond necklace buying. It will enable you have more information of the jewelry and can keep clearly mind in making decisions.