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
Cuban emerald Cuban emerald The Cuban emerald ("Chlorostilbon ricordii") is a species of hummingbird in the family Trochilidae. It is found in a wide range of semi-open habitats in Cuba, the Isle of Pines, and the western Bahamas. This bird is known locally as zun-zun, and can be observed to be feeding throughout the day, perching on a wire to rest. The male is almost entirely metallic or iridescent green and measures up to long. He has a slight bluish tinge to the breast, white spot behind the eye and a forked black tail. The female differs with a grey throat, breast