DIAMOND TERMS GLOSSARY

Sell Diamonds in the United States
A B C D E F G H I J K L M N O P Q R S T U V W Y Z

  • Abrasion – A blemish, such as small nicks along the facet junctions which look whiter than the rest of the diamond. Excessive abrading can be a sign that the stone is cubic zirconium, not a diamond
  • AGS (American Gem Society) – A highly regarded diamond grading laboratory in the United States. The accuracy of their diamond reports is 2nd only to GIA
  • Appraisal – Evaluation of diamonds or other jewelry, usually for insurance or estate purposes
  • Artificial Coloration – Color produced in a diamond by any of several enhancement processes
  • Asscher Cut – Early emerald cut style with very wide corners, a high crown and a deep pavilion (Diamond Shapes)
  • Average Girdle Diameter – Value achieved by adding the largest and smallest girdle measurements of a Round Brilliant diamond and dividing by 2