Etiquette ronde lunette / Label round glasses

grabcad

Guidelines for Diamond Grade Marking When it comes to grading diamonds, there are specific guidelines that must be followed in order to ensure accuracy and consistency. These guidelines are set forth by the Gemological Institute of America (GIA) and the International Gemological Institute (IGI), among others. The grading process takes into account several factors, including carat weight, clarity, color, and cut. By adhering to these guidelines, jewelers can confidently mark their diamonds with an appropriate grade that reflects its quality and value.