Gem Silicaâ„¢
Unregistered commercial name for a combination of quartz and chrysocolla. Robert Simmons (Heaven & Earth) coined the name for this “rare” material that he describes…
Unregistered commercial name for a combination of quartz and chrysocolla. Robert Simmons (Heaven & Earth) coined the name for this “rare” material that he describes…
Commercial name for a combination of hematite, magnetite and jasper found in the desert regions of western America. The unregistered trade name was introduced by…
Commercial name for Banded Iron Formation (BIF) material or tiger iron from Wyoming, United States. See also Genesis Jasperâ„¢. Several commercial names are used for…
Commercial name for a quartz that exhibits an opalescent luster with a subtle glow or sparkle that appears to move across its surface when it…
Gogotte is a French name for an unusual sandstone concretion, a sedimentary rock composed almost entirely of quartz grains cemented together by silica. These Gogottes…
Commercial name given to quartz with a natural golden yellow to orange-brown coating or yellowish inclusions. Usually the color is caused by traces or a…
Century-old trade name for a man-made glitter-containing glass, sometimes sold as a natural “gemstone. Original goldstone consists of tiny copper crystals dispersed in the glass.…
Unregistered commercial name for a bicolored rock from New Zealand, consisting of green matrix (possibly chlorite or fuchsite containing) with veins of white quartz. Obviously…
Commercial name for a gray, unspecified feldspar with a form of “flash” or pearly luster. Sometimes this is ‘true’ moonstone, but in many cases that…
Misleading name used for prasiolite, a green transparent variety of macrocrystalline quartz. Sometimes found in combination with amethyst (e.g. in Poland and Canada) and therefore…
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