1 gen 1400 anni - Jean d'Outremeuse (1338 in Liège – 1400)
Descrizione:
Tresorier de philosophie naturelle des pierres precieuses (A Lapidary, or the History of Pretious Stones) - by 14th C Jean d'Outremeuse has first three books like lapidary tradition; also talks about differentiating real and fake gemstones, with instructions for testing as well as recipes for making gemstones of glass
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