DIAMOND GEMOLOGICAL LABORATORIES OF AMERICA (DGLA) is a leading provider of gemstone services worldwide, setting the standard for excellence since its establishment in 1984. DGLA reports are recognized internationally as the definitive passport for gemstones, relied upon by trade professionals in over 90 countries for their consistent and reliable gemstone identification expertise.
We use the latest technology from around the world to make this possible and create flawless and accurate diamond reports.
Our diamond reports contain the analytical result of the diamond 4Cs, the process of origin (natural or synthetic), the plotting diagram of the diamond’s physical characteristics (internal and external) and a graphical representation of its proportions.
This diamond certificate also provides additional information about the proportions of a diamond in detail along with the polish grade, symmetry grade, and proportions grade (only for standard round brilliant cuts) for the diamond.
Learn MoreWe grade each piece of jewelry as mounting permits, ensuring that our certification is accurate and reliable. Trust Diamond Gemological Laboratories of America to certify your diamond jewelry with the highest level of care and expertise.
DGLA grades the widest variety of gemstones and jewelry in more corners of the world than any other gemological organization.
A diamond report is a document that provides a detailed evaluation of a diamond's characteristics, including its 4Cs - carat weight, cut, color, and clarity. It may also include information on the diamond's proportions, fluorescence, and any treatments applied to the stone. A diamond report is useful for buyers, sellers, and insurance purposes, as it provides an objective assessment of the diamond's quality and value.
A jewelry report is a document that provides a detailed assessment of a piece of jewelry's quality, including information on the materials used, the workmanship, and the overall condition of the piece. It may also include an evaluation of the piece's value, as well as any appraisals or certifications. A jewelry report can be useful for buyers, sellers, and insurance purposes, as it provides an objective assessment of the jewelry's quality and value.
A colored stone report is a document that provides information about a colored gemstone's quality and authenticity. It includes details such as the gemstone's color, clarity, cut, carat weight, and any treatments applied to it. It helps buyers and sellers make informed decisions about buying, selling, or appraising a gemstone.
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