Emerald

A dark bluish green to green variety of grossular garnet, tsavorite closely resembles emerald. These colors are highly valued. Yellowish green…

Demantoids are the green variety of andradite garnets. Their colors range from yellowish to brownish green to intense green and have a greater…

Golden yellow danburite, 32.97 cts, 20.93 x 16.25 mm, custom Barion emerald cut, Madagascar. © Kosnar Gem Co. Used with permission.

1.47-ct Barion emerald-cut opal, Lambina Mines, Australia. © Dan Stair Custom Gemstones. Used with permission.

Emerald-cut wulfenite, 2.53 cts, Red Cloud Mine, Arizona. Photo © Joel E. Arem, PhD, FGA. Used with permission.

Medium slightly brownish yellow, emerald radiant-cut 67.85-ct barite, 28.1 x 17 mm, Madagascar. © The Gem Trader. Used with permission.

People have prized opals and their play of colors for millennia. Pliny the Elder described opals as “made up of the glories of the most precious…

Emerald-cut xonotlite (about 2 carats): Laghi di Posina, Vicenza, Italy. Photo © Joel E. Arem, PhD, FGA. Used with permission.

“… are a girl’s best friend,” asscher-cut diamond ring. Photo by peter clifford. Licensed under CC By 2.0.