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An educated purchase

Only life’s most precious moments deserve the beauty, the elegance, and the timeless majesty of a Black by Brian Gavin®. So before you buy, we want to make sure you have all the information you need to make the right decision.

Even if you don’t select a Black by Brian Gavin, we want you to know what makes all diamonds so special. Everyone should have a little bit of diamond education.


  • Lab Grading

    Every Black by Brian Gavin diamond is graded “0” for cut, polish, symmetry, and—most importantly, light performance—by the American Gem Society Laboratory (AGSL), a lab known for its strict grading standards and scientific evaluation of light performance. But we take...

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  • Insurance

    Protecting Your Black by Brian Gavin Jewelry Congratulations on your decision to purchase an exclusive Black by Brian Gavin piece. We know you will want to protect your investment in the best way possible. We provide you with a lifetime...

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  • Care

    Every Black by Brian Gavin is crafted with intense attention to detail and handled with obsessive care. It takes ongoing maintenance to ensure your diamond has the best sparkle—and overall light performance—every day moving forward. How Often Should Jewelry Be...

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  • Cut [Performance]

    Cut Shape vs. Cut Performance: What’s the difference? In various grading reports, you’ll often see cut referred to as Cut Grade and shape referred to as Shape and Style, or Shape and Cutting Style, for example. The shape is merely...

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  • Cut [Shapes]

    Deciding on the shape of your diamond is an important step in the selection process because each shape has a different personality. Currently, Black by Brian Gavin focuses exclusively on round brilliant cuts. Round Brilliant Cuts The round brilliant cut...

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  • Clarity

    How Clarity Ratings Are Done The industry standard clarity grading is done with a loupe of 10X (10-Power). Diamond grades are always determined at 10X. What Does “eye clean” Mean? The term eye-clean is used to describe diamonds that have...

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  • Color

    Fancy colors Diamonds outside the normal color range are called fancy-colored diamonds. Fancy-colored diamonds exhibit more color than a Z stone. Colors may include red, purple, green, pink, yellow, blue, orange, and brown. Diamonds come in a wide range of...

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  • Carat

    Carat and karat are different. A carat is the the unit of weight for diamonds and other precious stones. A karat is the measurement of the purity of gold. A carat is the standard unit of weight for diamonds and most other precious stones. One carat is the equivalent...

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