Emerald

Rare trapiche emeralds have a “spoked wheel” appearance and form when impurities outline an emerald’s hexagonal crystal structure. Oval…

Emerald, Lake Manyara, Tanzania (1.50 cts). Photo © Joel E. Arem, PhD, FGA. Used with permission.

The Duke of Devonshire Emerald. Photo by Geni. Licensed under CC By-SA 4.0.

This Swat Valley emerald has intense color and few visible inclusions. Photo courtesy of liveauctioneers.com and Jasper52.

With great color and light-colored inclusions, these Ethiopian emeralds would make beautiful jewelry stones. © Rob Lavinsky, www.iRocks.com.…

Most Muzo emeralds show a slight secondary yellow hue. Photo by M.M. Licensed under CC By-SA 3.0.

The unusual mineral growth in this specimen hints at its origin at Coscuez. © Rob Lavinsky, www.iRocks.com. Used with permission.

Emeralds on calcite matrix from the Chivor Mine, Colombia. © Rob Lavinsky, www.iRocks.com. Used with permission.

Rough emeralds from the Panjshir Valley with excellent color. Photo by Paweł Maliszczak [hardleo.com]. Licensed under CC By-SA 4.0.