There are 12 colors in the spectrum of fancy colored diamonds: Yellow, Orange, Pink, Blue, Green, Brown, Violet, Gray, Purple, Red, Fancy Black, and Fancy White. It is always the last term in the full diamond color (ex. fancy dark yellowish green).
The clarity grade of a stone indicates how many internal and external imperfections a diamond has. Clarity is graded based on six categories, each with their own subcategories: Flawless, Internally Flawless, Very Very Slight Inclusion, Very Slight Inclusion, Slight Inclusion and Inclusion.
A carat is the unit of mass by which diamonds are weighed. One carat equals 200 mg.
The intensity of a diamond’s color is graded on a nine level scale: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Dark, Fancy Intense, Fancy Deep, Fancy Vivid. Intensity is the first term in the diamond color (ex. fancy dark yellowish green).
The polish is determined by how well the diamond was manufactured (cut and polished). A diamond with excellent polish should be totally smooth on the surface.
The symmetry of a diamond refers to how proportionate all the cuts and facets on the diamond are.