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Malvaviscus is a genus of flowering plants in the mallow family, Malvaceae. [2] Common names for species in this genus include Turk's cap mallow, wax mallow, sleeping hibiscus, and mazapan.
Purple gold Gold–aluminium phase diagram. Purple gold (also called amethyst gold and violet gold) is an alloy of gold and aluminium rich in gold–aluminium intermetallic (AuAl 2). Gold content in AuAl 2 is around 79% and can therefore be referred to as 18 karat gold.
Purple of Cassius is a purple pigment formed by the reaction of gold salts with tin(II) chloride. It has been used to impart glass with a red coloration (see cranberry glass ), as well as to determine the presence of gold as a chemical test .
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The analysis identified it as an “incredibly rare” lump of Tyrian purple dye, also known as imperial purple, the company said in a May 3 news release.
Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods).