Diamond Glossary G thru T

GIA (Gemological Institute of America): Was founded in 1931 as a non profit organization and is considered to be the standard bearer of the diamond grading industry with the strictest, most stringent diamond grading criterion. The grading system developed by the GIA has become the standard system used today by grading labs across the world.
Girdle: The outer ring of the diamond is called the girdle. The girdle is described by its thinnest and thickest points.
Inclusion: An intrinsic clarity characteristic found within diamonds.
Naturals: Small particles of the original rough diamond's surface which remain on the polished diamond.
Pavillion: This refers to the lower portion of the diamond underneath the girdle.
Point: Refers to a measurement describing the weight of a diamond. One point equals one hundredth of a carat.
Polish: This refers to a diamond's surface blemishes which do not affect its clarity grade such as polishing lines or scratches. Polish is graded on laboratory reports as either ideal (AGS) excellent, very good, good, fair, or poor (GIA).
Scintillation: This is the term for changing colours, the radiance and sparkle of the rays when the stone is moved or when the light source changes. The GemEx Brilliancescope ™ analyzer that we use for all of our diamonds measures the number of light points and determines how they change from position to position.
Symmetry: Variations in a diamond's symmetry such as misshapen or misaligned facets are graded in the laboratory report. Although such variations are often undetectable to the naked eye, it is certainly indicative of a diamonds cut quality.
Table: percentage Represents the diameter of the table facet in relation to the diameter of the entire diamond.

Diamond Repair
If your diamond chips contact Lenny Fuchs.

Quality Diamond Repairs

The Diamond Doctor Leonard Fuchs
Lenny@QualityDiamondRepair.com
10 West 47th Street, New York, N.Y. 10036

Lenny has over 31 years of experience in diamond repair.