Gia Diamond Cut Grades

For standard round brilliant cut diamonds falling in the d to z color range the report also includes a.

Gia diamond cut grades. And a simplified proportion. A description of its shape and cutting style. Diamond quality can be communicated in a universal language and diamond buying consumers can know exactly what they are about to purchase. Gia cut grade estimation tables for standard round brilliant cut diamond explains how to locate a particular proportion combination and determine whether it is close to a boundary in the cut grading system.

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. Non standard round brilliant cut diamonds. Cut is the most complex of a diamond s 4cs. 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.

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. Let s cover some essentials so you can pick the perfect round brilliant diamond engagement ring. 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. The gia diamond grading report includes an assessment of a diamond s 4cs color clarity cut and carat weight along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond s proportions.

Like gia the lumera cut grade is based on a variety of factors and is conservatively applied. The 4cs means two very important things. But reports do contain an assessment of the diamond s polish and symmetry. Full color 8 page booklet.