How to select diamonds. When you're selecting diamonds there are four things that diamonds are measured on. These are called the 4 C's of diamonds:
Cut. This refers to the shape of the diamond, which will determine how much it sparkles when the light hits it.
Carat. This is how big the diamond is.
Clarity. This measures how clear the diamond is. That is, if it has flaws (called inclusions) or not.
Color. This is the measurement of how white or yellow a diamond is.

If you are looking to complete your wardrobe and hate looking like everyone else, estate jewelry is an excellent choice. Here you will find variety and beautiful pieces from many different time periods. The chances of finding another wearing the exact same jewelry piece as you are drastically reduced. You can look unique and stand out from the crowd with estate jewelry. You also can choose between fine jewelry and costume jewelry.
Costume Jewelry came into being in the 1930s as a cheap disposable jewelry meant to be worn with a specific outfit, but not meant to be handed down through generations. It was intended to be fashionable for a short period of time, out date itself, and then be repurchased to fit with a new outfit purchase, or with a new fashion style. It became available in large quantities during the 30s.
If the pendant plays peekaboo in the neckline, then shorten the chain. Or put that pendant in either a shorter chain, so it sits confidently above your neckline, or go for a much longer necklace that would contrast beautifully against the fabric of your outfit. Next, look at your neck. Do you have a long slender neck? If you do, collar necklace or chokers are for you. These ultra short necklaces bring out the beauty of your long slender neck.