Emerald

Many Brazilian emeralds, like these, are entirely opaque. Photo by Mauro Cateb. Licensed under CC By 2.0.

Colombian emeralds made their way into this 18th-century bodice ornament. On display at the Victoria and Albert Museum, London, UK. Photo by Vassil.…

Colombian emeralds, like these, may receive a significant boost in price. Photo by Mauro Cateb. Licensed under CC By 2.0.

Growth patterns are clearly visible in these lab-made emerald specimens. Photo by Newermore ares. Licensed under CC By-SA 4.0.

Even hydrothermally grown emeralds have a few visible inclusions. Photo by Newermore ares. Licensed under CC By-SA 4.0.

Lechleitner was a pioneer of hydrothermal emerald growth. Synthetic emeralds on display at the Museum of Natural History, Vienna. Photo by U.Name.Me.…

Your first indication of a lab-made stone will likely be a very clean appearance, like this 9 mm round. Photo by Grendelkhan. Licensed under CC By-SA…

This ring features a 2.38-ct Russian emerald. Photo courtesy of liveauctioneers.com and Jasper52.