July 28, 2022

By Wade Abel, CG, Director of Gemological Services, AGS Laboratories One of the factors of a diamond grade that greatly impacts the diamond’s value is the diamond’s color. For colorless diamonds in the D-Z range, the possibility of obtaining a higher color using treatment can be potentially attractive. Most treatments for color are permanent and, therefore, can be assessed at AGS Laboratories. The important job of a third-party diamond grading lab is the appropriate disclosures that are required when treatment is detected. Specific protocols at AGS Laboratories provide our Advanced Detection team with the needed clues and evidence to make