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
Boulia Stone House of the boom in sheep and wool production after the drought, and is evidence of the role of Boulia as a commercial centre for the district since that time. Reputedly taking four years to build, it is an example of the utilisation of local materials for construction in remote areas, and is part of the late nineteenth century stone building tradition of central Australia which stretched into western Queensland. The place demonstrates rare, uncommon or endangered aspects of Queensland's cultural heritage. The Stone House is recognised as one of Boulia's oldest surviving buildings, and is also the only stone building