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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.
This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species .
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 ...
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
Lustre (British English) or luster (American English; see spelling differences) is the way light interacts with the surface of a crystal, rock, or mineral.The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance.
Kaustubha Gem; Kisshoutennyo (吉祥天女) Lakshmi/Kisshōtennyo. List of mythological objects; Luminous gemstones; Mani stone; Philosopher's stone; Sampo; Śarīra; Sendai Daikannon statue; Syamantaka Gem; Tide jewels; Yasakani no Magatama
Optical properties of common minerals Name Crystal system Indicatrix Optical sign Birefringence Color in plain polars Anorthite: Triclinic: Biaxial (-) 0.013