Leibish & Co., unveiled its World of Colors guide for identifying fancy colored diamonds in New York Thursday (January 19). A day earlier, I spoke privately with Leibish Polnauer, the president and ...

Natural History Museum of Los Angeles County is bringing together rare colored gems never before seen in the United States inside the museum’s Gem and Mineral Hall in an exhibition titled “Diamonds: ...

GENEVA -- A blue diamond weighing nearly 10 carats has sold at auction in Switzerland for 20.5 million Swiss francs ($26.6 ...

When shopping for a diamond, whether for an engagement ring or a piece of fine jewelry, you’ll quickly encounter the term Four Cs—Cut, Color, Clarity, and Carat Weight. These four characteristics ...

Israeli company Briza Color Diamonds has come up with a new technology, which enables diamond companies to turn their polished whites into color enhanced diamonds, thereby upgrading their value and ...

The discovery comes as the jewelry trade promotes off-color diamonds—like brown and champagne—as stylish, affordable ...

Deformation, impurities, radiation — many factors lend unexpected color to a diamond. By C. Claiborne Ray A. In diamonds, unexpected colors may arise in a variety of ways. These include small and ...

Tsukuba, Japan - Researchers from the Department of Applied Physics at the University of Tsukuba demonstrated second-order nonlinear optical effects in diamonds by taking advantage of internal color ...