Gem quality diamonds are the highest grade of diamonds, valued for their exceptional clarity, color, cut, and carat weight. These diamonds are typically graded using the GIA (Gemological Institute of America) scale, which assesses their quality based on these four criteria, often referred to as the "Four Cs." Gem quality diamonds are sought after for use in fine jewelry, particularly in engagement rings and other significant pieces. The clarity of a gem quality diamond refers to the absence of inclusions and blemishes, while color ranges from colorless to shades of yellow or brown. The cut determines how well the diamond reflects light, enhancing its brilliance and sparkle. Carat weight measures the size of the diamond, with larger stones generally being more valuable.