DIAMOND TERMS GLOSSARY

Sell Diamonds in the United States
  • Canary DiamondTerm used to describe an intensely –colored yellow diamond.
    This term is considered industry “slang” for a desirable yellow toned diamond and would not be mentioned on a Diamond Report from a lab such as GIA
  • Carat WeightStandard unit of weight for weighing diamonds. One carat is equal to .2 grams. Not to be confused with “Karat” which is used to describe the purity of gold
  • Carbon SpotThe industry term for a black or dark spot within a diamond.
    Dark inclusions can be more detrimental to a diamonds value then clean or white ones because they are much more visible
  • CavityAny opening or indentation on the surface of a diamond
  • Certificate (Cert)A diamond grading report which details all of the major characteristics of a single diamond. These reports are issued by numerous gemological laboratories around the world. The accuracy of these reports can vary depending on which lab they originated from
  • Certified GemologistTitle awarded to qualified gemologists who have completed the necessary courses to be considered professionals in their field
  • Champagne DiamondIndustry term for a yellowish brown or brownish yellow diamond that is too light in color to be considered a fancy color diamond
  • Channel SettingSetting style in which diamonds of the same size are set side by side with no metal between them, between two parallel outer metal walls
  • ChipAn inclusion on the surface of a diamond where an original portion was broken or chipped off. The presence of a chip usually means the diamond must be recut. This can be detrimental to the diamonds value because it will lose some of its carat weight during the re-cutting process
  • Clarity GradeThe grade given to a diamond based on the size, type and prevalence of its inclusions and blemishes. Diamonds without inclusions or blemishes are given a Flawless clarity grade
  • Clarity EnhancementAny artificial process used to improve the apparent clarity of a diamond. Some of the more common clarity enhancement methods include laser drilling and Yehuda treatment
  • CleavageStraight or smooth break which occurs along a diamonds graphic plane ,(the area of a diamond which is most susceptible to breaking)
  • Closed TableTerm used to describe a diamond which has a small table diameter relative to its girdle diameter
  • CloudHazy or milky area within a diamond. The result of numerous small inclusions which are grouped closely together
  • Coated DiamondA diamond which has been coated with an artificial colored substance in order to mask its undesirable color
  • Color GradePosition which a diamonds color falls into on the D-Z color range. With D representing colorless and Z representing light yellow, brown or gray. Diamonds with much more color then a Z grade are considered fancy colored diamonds
  • ColorlessTerm used to describe a D color diamond
  • Color Enhanced DiamondA diamond which has been artificially treated in order to achieve a fancy color or to improve its color density. Methods of color enhancement include High Pressure High Temperature treatment (HPHT), irradiation or the use of a coating to add color. Color Enhanced diamonds are worth much less then naturally fancy colored diamonds
  • CrownThe entire portion of the diamond which is above its girdle
  • CrystalA foreign material which grew into the structure of a diamond during its development in the earth’s crust. These inclusions will often have the appearance of “bubbles” within the diamonds surface
  • Cubic ZirconiaA rare, naturally occurring mineral which has been artificially mass produced as a cheap diamond simulant (CZ)
  • CuletA small facet at the very bottom of the diamond used to prevent chipping when the diamond is mounted into jewelry
  • Cut GradeThe Grade given to a diamond based on its proportions and finish. Principally in regards to their overall effects on the diamonds brilliance, and dispersion of light