The Chemical Gazette 318, 15.1.1856
A very beautiful and permanent gold varnish may be prepared in the following manner: - 2 ozs. of the best French garancine are digested in a glass vessel with 6 ozs. of alcohol of spec. grav, 0.833, for twelve hours, pressed, and filtered. A solution of clear orange-coloured shell-lac in similar alcohol is also prepared, filtered, and evaporated until the lac has the consistence of a clear syrup; it is then coloured with the tincture of garancine. Objects coated with this have a colour which only differs from that of gold by a slight brownish tinge. The colour may be more closely assimilated to that of gold by the addition of a little tincture of saffron.
— Archiv der Pharm., cxxxiv. p. 78.
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