LYCOS RETRIEVER 
Gold: Miscellaneous
built 290 days ago
Gold is the most reflective and least absorptive material of infrared (heat) energy -- high purity gold reflects up to 99% of infrared rays. Gold is ... an excellent conductor of thermal energy or heat -- a 35% gold alloy is used in the main engine nozzle of the Space Shuttle, where temperatures can reach 3300° centigrade.
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Only tiny flakes or crystals of these three minerals can possibly be confused with Gold, because the differences are easily noticed. These minerals are more pale than Gold, but occasionally exhibit a more intense yellow like Gold.
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Gold can be used in food and has the E Number 175. Goldwasser (German: "Goldwater") is a traditional herbal liqueur produced in Gdańsk, Poland and Schwabach, Germany and contains flakes of gold leaf. There are ... some expensive (~$1000) cocktails which contain flakes of gold leaf
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