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Ch. 3: Diamond

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78
PRECIOUS STONES.
this the three diamonds, in every respect unaltered and uninjured.
Some diamonds prepared by Maillard, and sub­mitted for twenty-four hours to the enormous tem-
perature of a porcelain furnace, resisted the heat like the preceding.
Analogous experiments were made in different parts of Europe, sometimes with the one, sometimes with the other of the preceding results. The facts remained inexplicable till—on the principal pheno-
Ch. 3: Diamond Page of 296 Ch. 3: Diamond
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