A true diamond certificate, or grading report, is a detailed certification from independent gemologist organizations. The GIA (Gemological Institute of America) certifies diamonds, and is known as "The World's Foremost Authority in Gemology."
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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![]() Princess Egl Certified Loose Engagement Diamond Ring US $3,499.00 |
![]() Princess Egl Certified Loose Engagement Diamond Ring US $2,890.00 |
![]() 195 Ct G Vs2 Princess Diamond Ring Certified 18k US $5,981.00 |
![]() Princess Diamond Ring Set 310 Ct E Vs2 Certified 18k US $15,780.00 |
![]() 254 Ct G Vs2 Princess Diamond Ring Certified US $6,200.00 |
![]() 371ct Natural Certified Solitaire Aa Black Diamond US $260.03 |
![]() 067ct Ultra Rare 100 Natural Certified Gray Diamond US $171.99 |
![]() 123 Carat Oval Shape D Si1 Loose Diamond Gia Certified US $5,800.00 |
![]() Certified Rarest Color Change Diamond 041cts $099 US $22.50 |
![]() Certified Huge Champagne Diamond 147 Cts $099 Nr US $51.00 |
![]() Certified Rarest Color Change Diamond 036cts Lot $099 US $10.50 |
![]() Certified 1 2 Ct H Si Diamond Heart Solitaire Pendant US $1,850.00 |
![]() Certified 155 Ct Ruby Diamond Three Stone Ring 18k US $4,912.00 |
![]() Certified 234 Ct Diamond Solitaire Pendant 18k Gold US $7,500.00 |
![]() Certified 063 Ct Diamond Solitaire Pendant 18k Gold US $1,190.00 |
![]() Certified 368 Ct Natural Emerald Diamond Pave Ring US $5,200.00 |
![]() Certified 835 Ct Natural Ruby Diamond Ring 18k Gold US $18,000.00 |
![]() Certified 471 Ct Natural Ruby Diamond Engagement Ring US $2,500.00 |
![]() Certified 8 Ct Natural Ruby Diamond Drop Earrings US $5,500.00 |
![]() Certified 390 Ct Natural Sapphire Diamond Earrings US $2,500.00 |


























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