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 54
Fig. 50. … Fig. 51. 48 A POPULAR TREATISE ON GEMS. cropinacoid ooPoo; on the other, numerous brachyprismscoP?2, with the Umit form ooPoo, or the brachypinacoid.In figs. 50, 51, the two domes are shown in their relationto the primitive pyramid. The pyramids seldom occur independent, or even as thepredominant…
Precious stones · Building stones · Mineralogy
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