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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).
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.
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.
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
Cintāmaṇi (Sanskrit; Devanagari: चिन्तामणि): 'Wish-Fulfilling Gem' (Tibetan: ཡིད་བཞིན་ནོར་བུ, Wylie: yid bzhin norbu) [4] The mani (jewel) is translated in Chinese ruyi or ruyizhu 如意珠 "as-one-wishes jewel" or ruyibaozhu 如意寶珠 "as-one-wishes precious jewel".
Opalescence or play of color is an optical phenomenon associated with the mineraloid gemstone opal, [1] a hydrated silicon dioxide. [2] This effect appears as a milky, translucent glow that changes with the angle of light, often creating a soft, pearly sheen that can display various colors or hues.
Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...