Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading ...

Nearly 60 works from the Torlonia Collection, including striking depictions of animals and people, will feature in exhibitions in Chicago, Fort Worth and Montreal.

The coffin was placed beneath Gian Lorenzo Bernini’s towering 1624 baldachin, near the high altar—just a few feet above the traditional site of the Apostle Peter’s tomb, uncovered during ...

This 7.19-carat alexandrite was cut to feature its beautiful color change. When the light source changes from daylight to incandescent light, the gem’s color changes from bluish green to reddish ...