Clarity

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

Cut

is the style or design guide used when shaping a diamond for polishing such as the brilliant cut

Carat

 is the unit of measurement for the physical weight of diamonds

Color

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)