The 4Cs—Cut, Color, Clarity, and Carat Weight—together define the unique beauty of a diamond. The 4Cs standard also determines a diamond’s value. While all four Cs are essential, each person may prioritize a different one based on her own preferences. For some, carat weight may matter more than the diamond’s cut, while others may value the gemstone’s color over its clarity. Understanding the 4Cs and knowing your own preferences can help you choose a diamond that suits your lifestyle and budget.