The purity of a diamond is one of the most crucial factors when determining it’s value. Diamonds without inclusions (imperfections) that are visible with 10X magnifying glass are real rarity. Small imperfections called inclusions are very common. The smaller the inclusions the more valuable the diamond will be.

It goes without saying that the differences in purity between similar stones are much difficult to establish by a layman and only a gemologist, with the aid of special white light and magnifying glass, is able to establish if a diamond is a VVS (Very very slightly included) rather than a VS (Very slightly included). To the eyes of layman they can appear identical when in fact there are remarkable differences in value.

Flawless

Flawless diamonds must be free from internal inclusions and external flaws. Internal graining not visible face up and without discoloration or small naturals on the girdle as long as they to not flatten the girdle are acceptable in the flawless grade.

Very Very Slightly Included

Very, Very Slightly Included Diamonds are just that. These diamonds usually require a microscope to grade as the inclusions are very, very small and difficult for a skilled observer to see.

Very Slightly Included

The Very Slightly Included grade is used for diamonds that have very small internal and external characteristics that are difficult to locate with 10X magnification and a skilled observer.

Slightly Included

Slightly Included diamonds have small to medium sized inclusions that are obvious when examined with 10K magnification but usually not visible to the naked eye.

Included

Imperfect diamonds have medium to large flaws that are usually obvious to the unaided eye. Durability may be an issue with the lower qualities.