Jeweler Laurence Graff bought the former, which is the largest known fancy-red round brilliant. In a refreshing departure from the Big Three, Phillips sold a ring featuring a 10.85-carat Brazilian ...

GIA’s laboratories use advanced instrumentation and research to deliver accurate grading, identification, and origin ...

Chrysoberyl is a rare gemstone that is usually found in shades of yellowish green ... and global prices are steadily increasing. Alexandrite was first discovered in Russia and named for Czar Alexander ...