is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes
is the style or design guide used when shaping a diamond for polishing such as the brilliant cut
is the unit of measurement for the physical weight of diamonds
is the hue of a diamond based on the GIA diamond colorscale, which grades the diamond's color on a spectrum of D (colorless) to Z (light yellow hue)
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