Diamonds, Pearls And Precious Stones : Where They Are Found, Howcut, And Made Ready for Use in the Jeweler's Art, Their Composition And Value
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In our eReader you can find the full English version of the book. Read Diamonds, Pearls And Precious Stones : Where They Are Found, Howcut, And Made Ready for Use in the Jeweler's Art, Their Composition And Value Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Diamonds, Pearls And Precious Stones : Where They Are Found, Howcut, And Made Ready for Use in the Jeweler's Art, Their Composition And Value
What reading level is Diamonds, Pearls And Precious Stones : Where They Are Found, Howcut, And Made Ready for Use in the Jeweler's Art, Their Composition And Value book?
To quickly assess the difficulty of the text, read a short excerpt:
The diamond saw is about three and one half inches in diameter, and consists of a very thin piece of a special alloy, the edge of which is treated with diamond dust. The work is done very slowly, several hours being required to cut one diamond, so that one workman operates a large number of saws at the same time.
After being cleaved or sawed the stone is again examined by an expert, and a plan for further work on that particular stone is deter- mined on. The most important point in this is THE ...CUTTING OF A DIAMOND ONE STONE IS SEEN IN THE LATHE, WHILE THE OTHER IS FIXED IN THE END OF THE TOOL HELD BY THE WORKMAN DIAMOND CUTTING 31 the location of the table, which when decided upon is marked with an ink circle.
The next step in the process is that called Diamond cutting. This work was done entirely by hand, uitxn ?> and was called bruiting, until about twenty-five years ago, when machine cutting came into use.
In machine cutting a rough diamond is fixed by cement in a steel holder held in a lathe and is cut by another diamond, which is also fixed into a steel holder attached to a handle some eighteen inches long, this latter diamond being held against the one in the revolving lathe and the cutting done much after the manner of wood turning.
What to read after Diamonds, Pearls And Precious Stones : Where They Are Found, Howcut, And Made Ready for Use in the Jeweler's Art, Their Composition And Value?
You can find similar books in the "Read Also" column, or choose other free books by Smith, Marcell Nelson, 1854- to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The diamond saw is about three and one half inches in diameter, and consists of a very thin piece of a special alloy, the edge of which is treated with diamond dust. The work is done very slowly, several hours being required to cut one diamond, so that one workman operates a large number of saws at the same time.
After being cleaved or sawed the stone is again examined by an expert, and a plan for further work on that particular stone is deter- mined on. The most important point in this is THE ...CUTTING OF A DIAMOND ONE STONE IS SEEN IN THE LATHE, WHILE THE OTHER IS FIXED IN THE END OF THE TOOL HELD BY THE WORKMAN DIAMOND CUTTING 31 the location of the table, which when decided upon is marked with an ink circle.
The next step in the process is that called Diamond cutting. This work was done entirely by hand, uitxn ?> and was called bruiting, until about twenty-five years ago, when machine cutting came into use.
In machine cutting a rough diamond is fixed by cement in a steel holder held in a lathe and is cut by another diamond, which is also fixed into a steel holder attached to a handle some eighteen inches long, this latter diamond being held against the one in the revolving lathe and the cutting done much after the manner of wood turning.
What to read after Diamonds, Pearls And Precious Stones : Where They Are Found, Howcut, And Made Ready for Use in the Jeweler's Art, Their Composition And Value?
You can find similar books in the "Read Also" column, or choose other free books by Smith, Marcell Nelson, 1854- to read onlineMoreLess
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