Round Brilliant Diamond Stud EarringsFeaturing Kwiat's Signature Three Prong Platinum Mounting and Tiara Cut Diamonds That Maximize Size, Brilliance and Scintillation. Platinum 2. 00 total carat weight H I in Color SI1 SI2 in Clarity More than a century ago in New York City, Sam Kwiat began a diamond jewelry design business that has since grown to become one of the most trusted and respected names in the industry. Still family owned, Kwiat has an unparalleled understanding of how to