A diamond certificate will contain detailed information about your diamond. The color, cut, carat, weight and clarity will all be graded, and other characteristics such as florescence will also be listed in a diamond certificate. You may be required to purchase the diamond certificate when buying your diamond jewelry, but the cost is usually minimal, and you can then be certain that you are purchasing a quality piece of diamond jewelry.

Companies like Blue Nile sell certified diamonds that are certified by GIA or the American Gem Society Laboratories, and Diamond.com offers certified diamond jewelry.

Another advantage of purchasing certified diamond jewelry is if you ever decide to sell your jewelry, it will be much easier for you to place a value on it, as well as ease the purchaser's mind that the diamond jewelry is real. You can use the Diamond grading report to look up the wholesale value of the diamond in question, which will help you determine a sales price.

It is good practice to avoid diamond dealers who are reluctant to provide a certificate for a diamond, or diamond jewelry dealers that attempt to sell a piece for a higher price because of the certification. One of the oldest and most well known sources for high quality certified diamond jewelry is DeBeers, and another classic source for certified diamond jewelry and wedding rings is at Tiffany & Co.

For more information on certified diamonds and diamond jewelry, you can also visit adiamondisforever.com

Another avenue for buying certified diamond jewelry that is not as well known is online auctions. With a certification from GIA or other reputable organization, you can be sure that you are purchasing the "real diamond deal." And since it's an auction, there is a very good chance that you can purchase your diamond jewelry at a significant discount, or even at wholesale prices! Here are some examples of the beautiful certified diamond jewelry you can purchase right now at auction:

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	101 Carat D VVS1 Good Cut Pear 100 Genuine Diamond GIA Certified	$9,032.00	30m

	082 Carat H VS2 Excellent Cut Round 100 Genuine Diamond GIA Certified	$4,021.00	30m

	200 Carat G VS1 Very Good Cut Round Earth Mined Diamond GIA Certified	$34,458.00	30m

	090 Carat H VS1 Very Good Cut Round 100 Genuine Diamond GIA Certified	$5,531.00	30m

	100 Carat I SI1 Ideal Cut Round Earth Mined Diamond Certified	$5,275.00	31m

	200 Carat G VS2 Excellent Cut Cushion 100 Genuine Diamond GIA Certified	$19,022.00	31m

	141 Carat H VS2 Very Good Cut Round Natural Loose Diamond EGL Certified	$6,965.00	31m

	104 Carat D SI1 Very Good Cut Round Natural Loose Diamond Certified	$7,433.00	31m