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 ...

From rare purple diamond discoveries to record-breaking sales, Paris Couture Week kicks off with a bang as new first-of-its-kind report presents the world's most coveted and rarest fancy colour ...

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 ...

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 ...

Mineral curator Mike Rumsey discusses the science behind the Aurora Pyramid of Hope, an unrivalled collection of 296 coloured diamonds. On display in a lofty Museum gallery is a small, glittering ...

The rock now gracing Taylor Swift’s finger, along with US president Donald Trump’s doubling of tariffs on goods from India, has given a welcome boost to the diamond industry. Swift’s engagement lifted ...

(From left) 4-carat yellow diamond ring (set in platinum and 18-k yellow gold), price upon request; 8.28-carat fancy-intense blue diamond ring (set in platinum), $12.5 million; 1.04-carat pink diamond ...

0.21 carat fancy colour rectangular radiant-cut diamond from the Naujaat Diamond Project 0.21 carat fancy colour rectangular radiant-cut diamond. The original rough carat weight was 0.55 carats and ...

Colored diamonds, which have natural pink, blue, yellow, and other brilliant hues, will continue to be closely sought-after by collectors and investors in 2019, according to Russian diamond group ...

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, ...