The 4C's is a universal method used to evaluate the quality of diamonds created by GIA, The International Diamond Grading System™.
There are four key factors that contribute to a diamond's overall value:
CUT | COLOR | CLARITY | CARAT
Diamonds are famous for their exceptional ability to transmit light and sparkle brilliantly. Although we usually associate a diamond's cut with its shape, such as round, heart, oval, marquise, or pear, the term actually refers to how well the diamonds facets interact with light. Crafting a diamond to achieve maximum light return requires meticulous attention to detail and skilled workmanship to ensure the stone's proportions, symmetry, and polish are precisely aligned.
When it comes to diamonds, the less color they have, the more valuable they are. This is because diamonds are assessed based on how close they are to being colorless. The grading system starts with the letter D, which represents a completely colorless diamond, and goes all the way to Z, which indicates a diamond with a more noticeable color. The differences in diamond color, although subtle and not easily noticeable, can play a significant role in determining its quality and price.
Diamonds are formed deep within the earth under extreme heat and pressure, resulting in unique birthmarks, also known as inclusions. The fewer inclusions a diamond has, the more valuable it is. The GIA Clarity Scale grades diamonds with 11 categories, but most fall under VS or SI. The system considers the size, nature, position, color or relief, and quantity of clarity characteristics visible under 10x magnification to determine clarity grade.
Carats are the unit of measurement for a diamond's weight. The larger the diamond, the more rare it is, making it more expensive and valuable. However, it is important to note that two diamonds of the same carat weight may differ in value and price based on their cut, clarity, and color.