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September 30, 2021

The Report Report: Colored Diamond Document for Fancy Brown Diamonds

By Jerrica Hamblin, Laboratory Program Development Analyst, AGS Laboratories AGS Laboratories is known for grading colorless diamonds, but did you know AGS Laboratories also grades fancy brown diamonds? In 2018, we introduced the Colored Diamond Document for fancy brown diamonds. The report has many benefits when selling to jewelry buyers, such as the visual attributes and graphic design the report uses to communicate color. Notable features of the report: Intensity: The combination effect of tone and saturation are evaluated on a scale from “Very Soft” to “Fancy Dark.” Accents and Accent Color: Subtle hues that contribute to the diamond’s overall

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Under the Scope: What Makes a Brown Diamond, Brown?

By Wade Abel, CG, Director of Gemological Services, AGS Laboratories There are interesting and forceful circumstances that create the brown color in brown diamonds. The brown color in these diamonds is a testament that the journey to the surface is not one that is easy or free of structural changing forces; stresses that can actually move atoms in the crystal structure. The process that is attributed to the color in brown diamonds is called plastic deformation: the slipping of the crystal structure along planes of the crystal lattice by the pressure and forces of the earth during the diamond’s formation

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