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A CARAT'S WEIGHT IN VARIOUS LOCALITIES
The weight of a carat is rated differently in vari­ous localities where the diamond industry is im­portant. On an average, the carat does not differ in value much from the fifth of a gram of the metric system (200 milligrams), or about three and one sixth English grains.
The fractions of the carat used in weighing pre­cious stones are 1/2, 1/3, 1/8 and so on down to one sixty-fourth; this fraction of a carat of 205 milli­grams is equal to 3.203 milligrams. The fourth part of a carat is known as a grain; not a Troy weight grain, however, but a " pearl grain "; al­though this is rarely used as a unit. In France 144 carats equal one ounce. Efforts are continu­ally being made to reconcile these variations of weight in the use of the term " carat," and also to substitute the gram of the metric system for the carat, and it is hoped that eventually the weighing °f precious stones may be universally standardised.
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Appendix Page of 451 Bibliography
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