A popular treatise on gems, in reference to their scientific value; a guide for the teacher of natural sciences, the jeweller, and amateur: together with a description of the elements of mineralogy, and all ornamental and architectural materials .. (1859)
Feuchtwanger, Lewis. [from old catalog] · New York, D. Appleton & company · leaf 160
In the year 1290 a society of lapidaries wasformed at Paris, and in 1385 there were diamond-cutters atISTuremburgh ; but it w^as not until 1456 that Ludwig YanBergen invented the art of polishing the diamond Avith itsown powder; gems were then cut according to mathe-matical principles; the art has…
Precious stones · Building stones · Mineralogy
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