Diamonds are top choices for gifts on various occasions because of their value and lifetime elegance.  Diamonds are one of the most expensive gems here on Earth.  Diamonds are also wise pieces of investment.  The question is: how to buy a diamond? Like many profitable stuff including snake oil, counterfeit sellers for diamonds exist for a purpose.  The purpose is to extract great amount of cash from your pockets!  It cannot be stressed enough that you must be very careful when purchasing for diamonds.  You should check the background and authenticity of the seller you are going to transact for diamonds with.Diamond Certificate.  One very important tip in buying diamonds is to ask for a diamond certificate from the jewelers.  With diamond certificate, you are assured that what you bought or what you are buying are certainly worth exactly what the jewelers claimed them to be.  A diamond certificate is the blueprint of a diamond.  It tells the exact measurement, weight and the details of the cut and quality of the diamond. In short, it speaks out all the individual properties of the stone itself and gives proof of the diamonds’ identity and value.  Some sellers may ask for a little pay for the diamond certificate but its cost is usually quite low.  Securing a diamond certificate will provide a much-needed peace of mind knowing that you are getting your money’s worth.