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 70
ccur in a series withparallel position, are often compressed into very thin plates,frequently not thicker than paper, giving to the surface ofthe aggregate a peculiar striated aspect. Only a few twin crystals in the different systems can benoticed, chiefly as examples of this mode of formation.…
Precious stones · Building stones · Mineralogy
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