Certified Diamonds

  • GIA, AGS, EGL and other diamond grading certificates

    GIA, AGS, EGL and other diamond grading certificates

    Why is buying a certified diamond better than buying a stone without a cert? What are the most reputable certification systems in the United States and around the world, and how are they different? Answers to these and other questions will help diamond buyers avoid being fleeced.

  • Does my diamond really need a certificate?

    Does my diamond really need a certificate?

    Diamonds do not require certificates.  However, a diamond certificate shows an independent third-party’s verification of the carat weight, cut, color, and clarity of the diamond.  This helps with insurance, reselling, and pushy mother-in-laws.

  • How do gemological laboratories test diamonds for certification?

    How do gemological laboratories test diamonds for certification?

    GIA makes no secret of its diamond testing and certification procedures. Read how a loose diamond makes its way through four inspectors, to be evaluated for weight, color, clarity, cut quality, and other considerations.

  • Can I send my diamond to a gemological laboratory for testing and certification?

    Can I send my diamond to a gemological laboratory for testing and certification?

    Diamonds can be sent to reputable gemological laboratories for testing and certification, and the overall price is less expensive than the “premium” retailers charge for certified diamonds over uncertified diamonds.

  • What can my diamond’s certificate tell me?

    What can my diamond’s certificate tell me?

    A diamond’s certificate should show the inspection date, shape, cut style, diamond measurement (length, width, and height), carat weight, color grade, clarity grade, and any additional information the diamond graders found.  But it can include much more.

  • How can you spot a fake diamond?

    How can you spot a fake diamond?

    The diamond market contains natural diamonds, laboratory grown diamonds, synthetic “diamonds” made of other materials, and natural diamonds that have undergone cosmetic surgery. Little tricks can help you discern which are which.