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Book IX artificially coloring of metals such as gold, silver, copper

Book IX artificially coloring of metals such as gold, silver, copper Page of 251 Book X lapis sabinicus, lapis selentinus, lapis liparaeus and other mixtures of stone, metal and earth Text size:minus plus Restore normal size   Mail page  Print this page
BOOK IX
201
an equal weight of sandyx. Since fraud is always with us today we find people crushing bricks into a powder and using this to adulterate sandyx.
heavy, liver-colored, with little gravel, with uniform color and spreading evenly when saturated with water. Material of this same type has been offered to me by Baptista Opizus of Venice, having been brought from Byzantium. How­ever it was not in the form of cakes as Manardus writes, having seen them him­self from this same locality. It was in the form of lumps. I have seen cakes in Venice that were brought from this same place, of almost a tawny color and stamped with Turkish letters and for that reason called terra sigillata.
Book IX artificially coloring of metals such as gold, silver, copper Page of 251 Book X lapis sabinicus, lapis selentinus, lapis liparaeus and other mixtures of stone, metal and earth
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