An extremely rare purple-pink Russian diamond has sold ... November 2015: The Blue Moon, a 12.03-carat ring-mounted blue diamond, caught the eye of Hong Kong tycoon Joseph Lau, who paid a record ...

Figure 1. Stellate clusters of zircon needles were observed in this purple-pink morganite. Vertical field of view 0.58 mm. Photomicrograph by Nathan Renfro. The Carlsbad laboratory recently examined a ...