The research also delved into millennial women’s attitudes and purchase plans for diamond jewelry; however, what they didn’t report is how these women feel about cultivated, man-made diamonds ...

In 2018, the FTC permitted “a mineral consisting essentially of pure carbon crystallized in the isometric system” to be described as a “diamond,” whether naturally occurring or man-made.

The 555.55 carat black diamond has belonged to its current owner for two decades but little is known about its history before that. A billion-year-old black diamond, believed to be the largest cut ...