Emerald says: "§ 23.23(c) It is unfair or deceptive to use the word "laboratory-grown", "laboratory-created", "[manufacturer name]-created", or "synthetic" with the name of any natural stone to describe any industry product unless such industry product has essentially the same optical, physical, and chemical properties as the stone named." Emerald is regarded as the traditional birthstone for May as well as the traditional gemstone for the astrological signs of Cancer. One of the quainter anecdotes about emeralds was told by the 16th-century historian Brantôme, who referred to the many impressive emeralds the Spanish under Cortez had brought back to Europe from Latin
A Study in Emerald nonsense nonetheless.” While not explicitly stated at the conclusion of the story, based on the date that accompanies the "signature", the recent events in Russia most likely refer to the assassination of Tsar Alexander II in 1881, i.e. an assassination of an Old One of extreme importance. British game designer Martin Wallace announced a boardgame based on "A Study in Emerald", that was released in October 2013 In June 2018 Dark Horse Comics published a graphic novel adaptation of the short story by Rafael Scavone, Rafael Albuquerque & Dave Stewart. "A Study in Emerald" won the 2004 Hugo Award for