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
Western Mexico shaft tomb tradition discovery of an unlooted shaft tomb at Huitzilapa is the latest major milestone, providing "the most detailed information to date on the funerary customs" associated with shaft tomb tradition. Western Mexico shaft tomb tradition The Western Mexico shaft tomb tradition or shaft tomb culture refers to a set of interlocked cultural traits found in the western Mexican states of Jalisco, Nayarit, and, to a lesser extent, Colima to its south, roughly dating to the period between 300 BCE and 400 CE, although there is not wide agreement on this end-date. Nearly all of the artifacts associated with this shaft tomb