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The OED defines pyrope (from Greek Πυρωπός, lit. "fire-eyed")" as: "In early use applied vaguely to a red or fiery gem, as ruby or carbuncle; (mineralogy) the Bohemian garnet or fire-garnet"; and carbuncle or carbuncle-stone (from Latin "carbunculus", "small glowing ember") as: "A name variously applied to precious stones of a red or ...
Schistostega pennata, also called goblin gold, [1] Dragon's gold, [2] luminous moss [1] or luminescent moss, [3] is a haplolepideous moss known for its glowing appearance in dark places. It is the only member of the family Schistostegaceae .
The visible absorption spectrum of scheelite, as seen by a hand-held (direct-vision) spectroscope, may also be of use: most natural stones show a number of faint absorption lines in the yellow region of the spectrum (~585 nm) due to praseodymium and neodymium trace impurities. Conversely, synthetic scheelite is often without such a spectrum.
Green diopside crystals included within a white feldspar matrix are also sold as gemstones, usually as beads or cabochons. This stone is often marketed as 'green spot jasper' or green spot stone'. Violane is a manganese-rich variety of diopside, violet to light blue in color. [11]
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In more recent history, moonstone became popular during the Art Nouveau period; French goldsmith René Lalique and many others created a large quantity of jewellery using this stone. [ 5 ] The moonstone is the Florida State Gemstone; it was designated as such in 1970 to commemorate the Moon landings , which took off from Kennedy Space Center .
Goldstone Goldstone glass under magnification. Goldstone is a type of glittering glass made in a low-oxygen reducing atmosphere.The finished product can take a smooth polish and be carved into beads, figurines, or other artifacts suitable for semiprecious stone, and in fact goldstone is often mistaken for or misrepresented as a natural material.
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