Each certified diamond is graded to determine its relative absence of color based on the GIA color scale which ranges from D (colorless) to Z (colored diamonds). GIA assigns a color grade by comparing the stone to a master set in a highly controlled lighting and viewing environement.
By convention, past the Z degree begins the "fancy colored diamonds" zone in which a marked and vivid degree of color is not a defect but a virtue.
Diamonds with color grade up to H look perfectly white, but also I, J and K look very white once fitted.
A diamond is graded a clarity grade based on the number and placement of internal features (inclusions) and surface characteristics (blemishes) that are visible under 10x magnification. The GIA Clarity Scale contains eleven clarity grades ranging from Flawless to I3.
Internally Flawless: The diamond has no internal features, It's also said "Loupe clean"
Very very small inclusions: The stone has very little features very hard to see under a 10X magnifier.
Very small inclusions: The diamond has minimal inclusions that are very hard to spot under a 10X mignification lens.
Small Inclusions1: Some minor inclusions are easily seen with a 10X magnifier, but they don't spoil the look of the diamond which still appear as very clear.
Small Inclusions2: The diamond features some inclusions that might spoil the look and the brilliance of the stone. In some cases inclusions are black and therefore easily visible to the naked eye.
Imperfect 1, 2 and 3 (also called Piquè in Europe): Some inclusions are normally easily visible to the naked eye. The higher the grade, the bigger the inclusions are. In I2 and I3 grade the brilliance is surely spoilt.
18K white gold
750 or 18K
Within a week
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