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One luminous gem "remarkable for its brilliancy and beauty" supposedly "grew on the head of a monʃtrous ʃerpent" that was guarded by many snakes. The medicine man hid this luminous gemstone, and no one else had seen it. Timberlake supposed he had "hatched the account of its difcovery" (1765: 48–49).
Luminescence occurs in some minerals when they are exposed to low-powered sources of ultraviolet or infrared electromagnetic radiation (for example, portable UV lamps), at atmospheric pressure and atmospheric temperatures.
Mineral symbols (text abbreviations) are used to abbreviate mineral groups, subgroups, and species, just as lettered symbols are used for the chemical elements.. The first set of commonly used mineral symbols was published in 1983 and covered the common rock-forming minerals using 192 two- or three-lettered symbols. [1]
Before buying any old gem, though, keep reading to uncover the 25 most popular gemstones—and their meanings. Agate “Agate is earthy, warm and rich,” Salzer says, noting that it exists in ...
Optical properties of common minerals Name Crystal system Indicatrix Optical sign Birefringence Color in plain polars Anorthite: Triclinic: Biaxial (-) 0.013
This is a list of gemstones, organized by species and types. Minerals. There are over 300 types of minerals that have been used as gemstones. Such as: A–B
In Tibetan Buddhist tradition the Chintamani is sometimes depicted as a luminous pearl and is in the possession of several of different forms of the Buddha. [ 3 ] In Japan, where the Hindu goddess Lakshmi is known as Kisshōten in Shinto , she is commonly depicted with a Cintāmaṇi in her hand.
In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The entity must either be predefined (built into the markup language) or explicitly declared in a Document Type Definition (DTD). The format is the same as for any entity reference: &name;