Rhinestone buckles are best bets during unexpected situations. You may have just arrived from work but you need to rush for an important dinner. If you are already wearing a plain formal dress, you could just top it off with a rhinestone belt buckle. The effect will be quite stunning. The best part about rhinestone belt buckles is that they never go out of style. There are some things that every woman must have because they are classics. These include a Chanel outfit, a silver clutch purse, stiletto heels and a black dress. Rhinestone belt buckles are also a part of this list. Rather, they have a very important position on that list. So make sure that you have one.