Firstly, you should decide how much you are going to spend for the necklace in question. If this is a necklace for everyday wear, then you can always keep the budget at a medium level. If it is meant to be worn for special occasions alone, then the budgets going to have to go a little higher. Decide carefully since jewelry, particularly necklaces, can be expensive if you choose 14 kt gold or platinum.
Secondly, you need to figure out what necklace would fit the persons sense of style. The necklace accentuates the persons outfit, so you have to choose if the necklace is going to be a choker, a street style fashion necklace, opera, uniform, necklace and the like. For example, collar necklaces are usually most suitable when wearing V-necks and off-shoulder tops. A woman who loves clothes with high necklines can wear princess necklaces.

Thirdly, you can also choose based on the lifestyle of the person. If shes, for example, a career woman doing executive work at a prestigious company, then you can get her a matinee necklace that will definitely enhance her appearance and boost her confidence. If the person youre giving the necklace is planning on going to a formal dinner or gathering, you can get her an opera necklace that works with high necklines.

Fourthly, look into the craftsmanship of the necklace. Sure, posh necklaces with popular brands like Tiffany and Cartier are undoubtedly crafted well, but if youre buying less expensive necklaces you have to make sure that the craftsmanship is good. You can tell by the strength of the necklace, if the locks dont break easily, the links dont open up (especially if they hold pendants), etc.

If you have many necklaces, it is a good idea to stay with neutral colors and designs, as compared to the vivid colors and patterns of many of the holders.
The smaller colored necklaces are difficult to see against such a background , as the necklace will get lost in the designs.

The best way to buy them is by shopping online. It will always save you time and money while guaranteeing you the latest in designs. Go visit a few beauty sites now now and you'll be amazed how easy it is to find the perfect necklace that suits you.