Every diamond is hand-selected to match beautifully and must pass exacting quality standards. Kay is diligent about the quality of our craftsmanship. We take the time to ensure the diamonds in your jewelry are well matched to one another. Because we import more diamonds than any other company in the United States, we can offer you the largest and finest diamond selection at the best price. You'll Be Brilliant Too. Our diamontologists are trained experts who are prepared to help you with what could be one of the most important purchases you'll ever make. Using a gemological microscope, you'll see for yourself the 4Cs...the characteristics that make your diamond unique and beautiful. If you're becoming engaged - Congratulations! Our Bridal Guide can help you choose your wedding jewelry. If you don't see exactly what you want ask about our Special Order program.