Gia Diamond Cut Grades

Gia created the 4cs color clarity cut and carat weight as a universal method for establishing the quality of any diamond anywhere in the world.

Gia diamond cut grades.

The gia diamond cut scale for standard round brilliant diamonds in the d to z diamond color range contains 5 grades ranging from excellent to poor and is the definitive scale for classifying diamond cuts. It also discusses how to use facetware online to obtain a more accurate estimate of a cut grade. The gia cut grading system introduced in 2005 and validated by thousands of observations by retailers manufacturers and the public who looked at real diamonds and described why they thought certain diamonds were the best looking can help you understand what to look for in a well cut diamond. At this time an overall cut grade for non standard round brilliant diamonds or fancy shaped diamonds such as rectangular oval or square is not available on gia grading reports.

Like gia the lumera cut grade is based on a variety of factors and is conservatively applied. For standard round brilliant cut diamonds falling in the d to z color range the report also includes a. Non standard round brilliant cut diamonds. Full color 8 page booklet.

Cut is the most complex of a diamond s 4cs. The 4cs means two very important things. Diamond quality can be communicated in a universal language and diamond buying consumers can know exactly what they are about to purchase. A description of its shape and cutting style.

But reports do contain an assessment of the diamond s polish and symmetry. Let s cover some essentials so you can pick the perfect round brilliant diamond engagement ring. For diamonds without a gia cut grade because the diamond was certified before gia began assigning cut grades in 2005 or is a shape that gia does not currently assign cut grades to lumera will apply its own cut grade according to a proprietary formula. And a simplified proportion.