Diamonds, pearls and precious stones : where they are found, howcut, and made ready for use in the jeweler's art, their composition and value (1913)
Smith, Marcell Nelson, 1854- · Boston, Mass. : Printed for Smith Patterson Co. by Atlantic Print. Co. · leaf 101
a gem. In the cutting of the gem skill is necessary inorder to so cut the specimen that it will exhibitits most beautiful color. The most valuedcolors are, as a rule, dark red, sometimes almostapproaching that of the ruby, and dark greenshading to blue or yellow.Tourmaline One of the chief… … TOURMALINES 69 interested in the study of the minerals whichwere of frequent occurrence in the fields abouttheir homes. One day in the fall of 1820, afterhunting some time for specimens, they wereattracted by the gleam of something green atthe roots of a tree. They eagerly secured themineral, and…
Precious stones · Gems · Diamonds · Pearls
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